God created humanity in His image. It wasn’t physical attributes or personality, but the presence of God within them that made those first humans little images of God. But then, tempted by Satan, they ignored God, perhaps in a way denied His image within them, and took on something of the image of Satan. I know that last bit may sound harsh, but I can’t ignore the fact that humanity currently shares some of those devilish traits, such as pride and self-centeredness. Instead of worshipping God, I guess Adam and Eve began to worship Self. And with that, they lost God’s presence and His image.
But we can get His image back. That’s why Jesus sent the Holy Spirit when He returned to heaven. The Holy Spirit can lead us to deny our Self, and worship only God. The Holy Spirit can enter our lives and fill us with His presence. Jesus came to free us from the penalty of our pride-influenced sins. His Spirit then came to free us from captivity to Self, and make us once again an image of God, as it was in the beginning.
Here’s some Bible backup, to show I’m not imagining any of this:
“You have taken off your old self with its practices and have put on the new self, which is being renewed in knowledge in the image of its Creator.” (Colossians 3:9-10)
“And all of us, with unveiled faces, seeing the glory of the Lord as though reflected in a mirror, are being transformed into the same image from one degree of glory to another; for this comes from the Lord, the Spirit.” (2 Corinthians 3:18)
“You were taught, with regard to your former way of life, to put off your old self, which is being corrupted by its deceitful desires; to be made new in the attitude of your minds; and to put on the new self, created to be like God in true righteousness and holiness.” (Ephesians 4:22-24)