The Bible’s teaching about the “image of God” is important to trace and understand. Here’s a 7-step summary of it:
(1) God made man in His image to fill the earth with image-bearers who represent Him and rule over creation with wisdom and royal dominion (Gen 1:26-28).
(2) After the Fall, mankind still bears the image of God (Gen 5:3; 9:6; Jam 3:9).
(3) Because of sin, though, unregenerate image-bearers cannot function as faithful representatives of God’s rule because of the corruption of sin and subsequent idolatry (Rom 1:18, 21-23, 25; 3:23).
(4) But God never recanted His creation mandate about multiplying the earth with image-bearers and exercising dominion (e.g. Gen 15:5 17:6, 20; 22:17; 26:22; 28:3; 35:11; 41:52; 47:27; 48:4).
(5) At the appointed time, God sent into the world His Son, an unmade Person who is the very image of God (Col 1:15; Heb 1:3; 2 Cor 4:4), who–by virtue of his death and resurrection–has all authority over heaven and earth and has been given the name above every name, over any opposing power, over every conceivable dominion (Eph 1:21; Phil 2:9; Col 1:16; 2:15).
(6) Now, when sinners are united to Christ by the Spirit through saving faith, the image of God is being restored in believers as we are being inwardly renewed (2 Cor 4:16; Eph 4:23) and transformed into Christ’s image (Eph 4:24; Col 3:10; 2 Cor 3:18; Rom 8:29), so that we can rightly represent Him as the Church of God mediating the knowledge of Him to the world (Matt 28:18-20; 1 Pet 2:9; Col 2:10; Eph 3:8-9; Phil 2:15).
(7) God will complete the restoration of His image in us when Christ returns to raise the dead, for only then will we–who for now return to dust at death–exercise dominion over God’s renewed world in incorruptible bodies in the likeness of the Last Adam (1 Cor 15:45-49).