Hello, God has given me something in 1 Samuel 12:22 which says, “For the sake of His great name the Lord will not reject His people, because the Lord was pleased to make you His own.”
So, what God has given me, is that God will not reject His people, because He has already rejected His son (Jesus) and sent His son (Jesus) to take our sin and die on the cross for us. So God rejected His son, and excepted the former sinners, but because Jesus took our sin and died, we can be accepted as Jesus sons and daughters, in Jesus’ place.
Samuel says that He was pleased to call them His own, well God is pleased to call us His own, because we were the only thing that God made in the time of creation that was made in God’s likeness, His image, “Then God said, “Let us make man in our image, after our likeness. And let them have dominion over the fish of the sea and over the birds of the heavens and over the livestock and over all the earth and over every creeping thing that creeps on the earth.” (ESV) Genesis 1:26, so we were made out of God’s image, and to God we were (and are) very important.