When the scriptures say "image", they mean likeness. This can be considered in personality, attitude, thinking, goodness.
The disciples said "Show up the Father and that will be enough", then Jesus said "Have I been with you this whole time and you still don't know the Father? Whoever has seen me has seen the Father."
Jesus drove the money-changers out of the temple. In the same way, God in the old covenant hated his holy temple being defiled.
Jesus agreed with scripture and used it to drive off Satan's temptations int he wilderness.
Jesus said in the gospel of John "The Father loves the Son and shows him everything He does" and "the Son can do nothing except what the Father does."
That is Jesus was conceived of the Holy Spirit, and had the personality, attributes, nature and heart of God.
If you play video games, it's like you play as a character in the game. The Ais in the game don't see the player, but they see the player's character. The player is an unseen entity in a video game, but the character in the game is what is seen, a "representative" or "image" of the player.
Now, the living God has no physical body, He is the "Father of Spirits". The Angel of the Lord in the old testament are often called Christophanies. You saw a representation of God.
See in Revelation there is the phrase, Rev 4:2 "At once I was in the Spirit, and I saw a throne standing in heaven, with someone seated on it. 3. The One seated there looked like jasper and carnelian, and a rainbow that gleamed like an emerald encircled the throne." But Rev 5:6 says "Then I saw a Lamb, looking as if it had been slain, standing at the center of the throne, encircled by the four living creatures and the elders. The Lamb had seven horns and seven eyes, which are the seven spirits of God sent out into all the earth."
So this lamb on the throne is the same as the character in Rev 4:2. It's Jesus. It's not two thrones and a bird perch, one for the Father, one for the Son and one for the Holy Spirit who is a dove. It's just One Throne, One Jesus who is the only visible representation of God.
Now about him "Bearing our sins in His body", Isaiah has a scripture "Sacrifices and burnt offerings you were not pleased with so a body thou hast prepared for me" and Psalm 40:6-8 "Sacrifice and offering You did not desire, but my ears You have opened. Burnt offerings and sin offerings You did not require. 7. Then I said, “Here I am, I have come— it is written about me in the scroll: 8. I delight to do Your will, O my God; Your law is within my heart."
(Ears opening could mean hearing, but rather in this context anyone in the old testament knows that when a slave wants to serve his master for live, they punch a hole in his ear on the doorpost. So this is a statement of being a servant of servants.)
And also, about Jesus bearing sins:
Romans 8:3-4 "3. For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, 3. he condemned sin in the flesh, 4. in order that the righteous requirement of the law might be fulfilled in us, who walk not according to the flesh but according to the Spirit."
So basically, Jesus became a man to represent God to us, who couldn't see God, and also to die. To become a sacrifice that would eliminate the need for animal sacrifice.
And two more things about Jesus becoming a man. He had to become a man 1. to experience our suffering so he could empathize with our weakness. And 2. In order to become a priest for us. because priests for humans are humans that represent other humans before God. And priests speak to humans on behalf of God. So Jesus could not be a priest for us unless he became a man. Here's the supporting scripture in Hebrews 4:14-15: "14. Therefore, since we have a great high priest who has passed through the heavens, Jesus the Son of God, let us hold firmly to what we profess. 15. For we do not have a high priest who is unable to sympathize with our weaknesses, but we have one who was tempted in every way that we are, yet was without sin."