Q. 51 What is forbidden in the second commandment?A. The second commandment forbiddeth the worshipping of God by images, or any other way not appointed in His word.See here how the problem of adding to the worship that God appointed is described by Jesus Christ. The issue was actually raised by those who were following man-made traditions. Often those who do this feel quite superior to those who do not follow their traditions. You can see in our text how they call into question the Lord Jesus Himself!