In the first five centuries of Christianity, the Church faced intense doctrinal controversies regarding the Trinity and the deity of Christ. A clear example is Arianism, a heresy that claimed that the Son (Jesus Christ) was created by the Father and that, therefore, there was a time when He did not exist. Alongside this, other theological errors arose, such as Docetism —which denied the true humanity of Christ— and Adoptionism, which held that Jesus was a man adopted by God at some point during His earthly life.
Despite these attacks, the faithful Church has defended from its beginnings the revealed truth of the full deity of Christ. If we affirm that the Bible is the infallible and inerrant Word of God, we cannot deny this central reality of the Christian faith. Therefore, we now present biblical passages that unequivocally proclaim Christ as true God and Lord.
1 – Matthew 1:23
Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.
Approximately seven hundred years before Christ, the prophet Isaiah announced this prophecy: “Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel” (Isaiah 7:14). In the original Hebrew, Emmanuel (ʿimmānû ʾēl) means: “God with us” or “With us is God.”
This passage clearly points to the deity of Christ. However, it is important to clarify that it is not a deity that began with His virgin birth —as some heretics of the early centuries claimed— but an eternal deity, without beginning or end. Let us remember the words of Jesus in the Gospel of John: “Verily, verily, I say unto you, Before Abraham was, I am” (John 8:58).
2 – Isaiah 9:6
For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace.
This passage was cited by Church Fathers such as Justin Martyr, Irenaeus of Lyons, and Athanasius, especially in the context of the controversy against Arianism, as proof that Jesus is truly God. Irenaeus of Lyons interpreted it profoundly, recognizing in it the two natures of Christ: human and divine. He wrote:
“The prophet Isaiah proclaimed his birth as a man, saying: ‘Unto us a child is born, unto us a son is given.’ And he also declared his divine nature by calling him ‘The mighty God’ and ‘The everlasting Father.’ It is not possible to call a mere man by such names.”
Indeed, if Jesus were only a man and not God, why then do the Scriptures, time and again —as we see now in these verses— attribute to Him the same titles, attributes, and prerogatives that belong exclusively to God the Father?
3 – Isaiah 43:10
Ye are my witnesses, saith the LORD, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither shall there be after me.
Glory to God for all that Isaiah prophesied concerning Jesus! In this passage, let us notice a key expression that God pronounces: “I am he.” These are the very same words that Jesus used in John 8:58: “Before Abraham was, I am.”
Another fundamental aspect is that God the Father declares that before Him no god was formed, neither shall there be after Him. Therefore, it is unsustainable to claim that Jesus received His divinity at birth or that He was a created god. Such a theory directly and absolutely contradicts this passage of Scripture.
4 – John 1:3
All things were made by him; and without him was not any thing made that was made.
All things were not only made by Christ, but He actively participated in creation. This is affirmed in John 1:3, Colossians 1:16, and Hebrews 1:2–3. Let us remember what Genesis says: “And God said, Let us make man in our image, after our likeness” (Genesis 1:26). That “let us” has been interpreted by the Church as a reference to the plurality of persons in the Godhead (Elohim), which harmonizes with the New Testament revelation of the Trinity.
Athanasius, in his struggle against Arianism, used this passage saying: “If He is the one who makes all things, then He is not made; and if He is not made, He is eternal like the Father” (Against the Arians, Discourse II, 22).
5 – John 1:1,14
1 In the beginning was the Word, and the Word was with God, and the Word was God.
14 And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.
What “beginning” is John referring to in verse 1? This passage alludes to two realities: first, the presence of Jesus at the very moment of creation described in Genesis; and second, His eternal nature, without beginning or end, as revealed in the book of Revelation. The key lies in the words: “In the beginning was the Word, and the Word was with God, and the Word was God.” It does not say He was a god, but that He was God.
Verse 14 is, without a doubt, one of my favorite passages in all of Scripture. Here, John reaffirms that the Word —who is God— also assumed a human nature. He states it emphatically: “And the Word was made flesh, and dwelt among us.” That is, the eternal Son of God became incarnate, entering our history to live among men.
6 – John 5:17-18
17 But Jesus answered them, My Father worketh hitherto, and I work.
18 Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God.
Jesus said: “My Father worketh hitherto, and I work.” Do we not see here Jesus placing Himself on a plane of equality with the Father? In Jewish thought, the only one who had the right to work even on the Sabbath was God Himself. And here is the key: if Jesus is truly God, why, if His Father works, should He rest?
The Jews perfectly understood the meaning of His words. That is why the text says they sought to kill Him, “because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God.” In other words, they understood that His words carried a direct claim to divinity, though they refused to accept it.
7 – John 5:23
That all men should honour the Son, even as they honour the Father. He that honoureth not the Son honoureth not the Father which hath sent him.
Once again we see Jesus sharing with the Father the same attribute of receiving glory. If Jesus is not God, how could He receive the same honor as the Father? And going even further: if Jesus were not truly God, how is it possible that whoever does not honor the Son does not honor the Father? This passage is, without a doubt, a solid foundation to demonstrate the deity of Christ with the Bible in hand. Chrysostom, in his Homily 39 on John, commented:
Christ not only equals His work with the Father’s, but also the honor. If this were false, it would be the greatest blasphemy; but as it is true, it is the highest confession of His divinity.
8 – John 8:58
Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
In this passage, Jesus uses the same divine title that God the Father used in Exodus 3:14: YHWH. The surprising thing is not only that He affirmed His existence prior to Abraham —which would already indicate His preexistence— but that, by saying “I am,” Jesus was declaring His eternity and adopting a title exclusive to divinity.
Martin Luther described this verse as a hammer against those who deny the deity of Christ. He also noted that, by using that “I am,” Jesus placed Himself on the same level as God the Father when He revealed Himself to Moses in the burning bush.
9 – John 10:30-33
30 I and my Father are one.
31 Then the Jews took up stones again to stone him.
32 Jesus answered them, Many good works have I shewed you from my Father; for which of those works do ye stone me?
33 The Jews answered him, saying, For a good work we stone thee not; but for blasphemy; and because that thou, being a man, makest thyself God.
Verse 30 is of utmost importance, for it not only affirms the divinity of Christ but also refutes another false doctrine known as Modalism, Sabellianism, or Oneness, which holds that Jesus and the Father are exactly the same person. The text does not teach that; it declares: “I and my Father are one.”
As one preacher has said: The Father is not the Son, the Son is not the Father, and the Holy Spirit is not the Father. They are one in divine essence but distinct in person. This is the truth that the Bible reveals: one God in three eternal persons, equal in glory, power, and majesty.
10 – John 14:9-11
9 Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father?
10 Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.
11 Believe me that I am in the Father, and the Father in me: or else believe me for the very works’ sake.
Is Jesus saying here that He is the Father? No, that would again fall into the error of Modalism. What Jesus is affirming is that He is the very image of the Father, that the perfect revelation of the Father is found in Him. Hebrews 1:3 confirms it clearly:
Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high;
Thus, Jesus is not a mere messenger or an agent clothed with divinity. The Bible teaches that He shares the same attributes, glory, and honor as God the Father.
Conclusion
This subject is of utmost importance, for as we have seen, in the early centuries of the Church, many attempted to deny or distort the deity of Christ, falling into heresies that claimed He did not exist from eternity, that He was a created god, among other falsehoods.
In numerous councils held at that time, these erroneous doctrines were identified and firmly refuted. The Church, relying on the clear and sufficient testimony of Scripture, proclaimed with authority that Jesus Christ is true God, eternal, consubstantial with the Father, and worthy of the same glory and worship.