The nation of Israel had its ups and downs throughout the Bible, times of spiritual strength and times of spiritual decline. Many times they received God’s punishment, but they also saw his mercies widely, and we can see ourselves in the same mirror, since our life is about the same, of ups and downs, of defeats and victories. The Bible says:
17 And they shall be mine, saith the Lord of hosts, in that day when I make up my jewels; and I will spare them, as a man spareth his own son that serveth him.
18 Then shall ye return, and discern between the righteous and the wicked, between him that serveth God and him that serveth him not.
Malachi 3:17-18 (KJV)
These verses from the book of Malachi speak exactly of a spiritual decline and that decline led them to think that this God of love no longer loved them and that they were not a special treasure. However, God reminds them in verse 17 that despite everything they are a special treasure to the Lord.
Oh dear brothers, we are a special treasure for the Lord, regardless of our past or the times we have fallen. If we repent and seek the only true God, He is powerful enough to help us.
God would make the difference in Israel between the just and the unjust, between the holy and the profane, and this verse 18 shows us that despite such spiritual decline, there were people in Israel who were still seeking the Lord, and God would make a difference between both parts.