One such icon is Christ Himself.
[Christ] is the image(*) of the invisible God, the firstborn of every creature:(Col 1:15)
The icon of Christ is what forms us and converts us:
whom he foreknew, he also predestinated to be made conformable to the image of his Son(Romans 8:29)
let us bear also the image of the heavenly.
(1 Corinthians 15:49)
we all beholding the glory of the Lord with open face, are transformed into the same image from glory to glory, as by the Spirit of the Lord.
(2 Corinthians 3:18)
putting on the new, him who is renewed unto knowledge, according to the image of him that created him.
(Colossians 3)
But wait! here is a crucifix:
before [the Galatians'] eyes Jesus Christ hath been set forth, crucified among you?(Galatians 3:1)
we preach Christ crucified, unto the Jews indeed a stumblingblock, and unto the Gentiles foolishness
(1 Corinthians 1:23)
Paul says there is no comparison between your icons and Christ Jesus.
Acts 17:29Being therefore the offspring of God, we must not suppose the divinity to be like unto gold, or silver, or stone, the graving of art, and device of man. 30And God indeed having winked at the times of this ignorance, now declareth unto men, that all should every where do penance.