The Christian must every day take care of what is going to come out of his mouth, because there are words that can hurt. This is why we can hear a saying that says “think before you speak”.
A good man brings good things out of the good stored up in him, and an evil man brings evil things out of the evil stored up in him.
When Jesus left the place, a large crowd followed Him, they wanted to hear the message of the Master, who taught all these people that all blasphemy that man committed against the son of man can be forgiven, but that there is something that has no forgiveness, and it is blasphemy with the Holy Spirit.
It is for this reason we must take into account everything we are going to say, because as Jesus explained, that when man lied, blasphemed, criticized, this could be forgiven. But to speak evil of the Holy Spirit is a sin that is not forgiven.
But I tell you that everyone will have to give account on the day of judgment for every empty word they have spoken.
We must also bear in mind that each of the words that come out of our mouths are taken into account by God, because, as it says in the previous verse, one day we will have to appear before Him to give an account of the words that have come from our mouths
This is why Jesus calls attention to all those who were being idle, so that they would listen to the message, and so that each one would be careful with their words.
For by your words you will be acquitted, and by your words you will be condemned.
Through these words Jesus advised the people to speak good words so that they could be justified on the day of judgment, but we already know that everyone who utters words of destruction will be condemned on that great day.