εἰκών

εἰκών names an image, likeness, or representation that bears relation to an original. In some passages it is ordinary and visible, such as the image on a coin. In others it becomes theologically charged, as when fallen humanity exchanges the glory of God for images, or when Christ is called the image of the invisible God. The word must be handled by context. It does not automatically mean identical essence in every use, but in Colossians 1:15 it serves Paul's confession that the invisible God is truly and decisively made known in the Son.

Colossians also uses the word for renewed humanity. The new self is being renewed in knowledge according to the image of its Creator. That means εἰκών is not only a Christological word in this book. It also speaks to formation. Christ is the image in whom God is known, and believers are renewed according to the Creator's image as they put off the old self and put on the new. The word protects both doctrine and discipleship: Christ reveals God, and life in Christ renews what sin has distorted.

εἰκών moves from visible representation to deep theological witness. The word can name a coin image, an idolatrous image, Christ as the image of God, and the renewed image being restored in believers.