Al Mohler, Words from the Fire, end of chapter two:
“We are to make no image of Him. We should paint no pictures of Him. If we were to know the visual image of Christ, He would have left us His visual image. He did not. And every picture or portrait of Him is an invention, and as an invention, it robs Him of His glory. The worship of icons is just wrapped up in the foolishness of the same lie. God does not command or authorize the use of images in order to understand and worship Him. As a matter of fact, God condemns images and leaves no doubt concerning the matter.
Jesus Christ is not a visual image for us—He is so much more than that. And thus this commandment is also for us lest we turn our worship of Christ into another form of idolatry. We preach Christ crucified. We point to Christ in His glory. We preach the cross. We teach and preach all the things concerning the Christ. And we use words.
The second commandment is a clear condemnation of idols and images. We are not to use our creativity in order to fabricate an idol or to worship an image.”