The image of the King is also called the king, and there are not two kings in consequence. Neither is power divided, nor is glory distributed. just as the reigning power over us is one, so is our homage one, not many, and the honor given to the image reaches back to the original. What the image is in the one case as a representation, that the Son is by His humanity, and as in art likeness is according to form, so in the divine and incommensurable nature union is effected in the indwelling Godhead.
St. John Damascene
Apology Against Those Who Decry Holy Images
Quoted from Amphilochios, On the Holy Spirit