The Second Commandment reads, “Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth: Thou shalt not bow down thyself to them, nor serve them: for I the Lord [Eternal] thy God am a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth generation of them that hate me; and showing mercy unto thousands of them that love me, and keep my commandments” (Ex. 20:4-6).
Man is continually looking for a physical means of worshipping God. That is exactly what this scripture forbids. Worship of God is spiritual. God continually forbade Israel to use any form of idol or image in worship.
Of course, God does not condemn art or sculpture. We are, however, not “to bow down” or “serve them.” In other words, objects should not be used for the purpose of worship. This includes crucifixes, sculptures, etc.
Clearly, this command also forbids pictures and images depicting Jesus Christ. If God’s Holy Spirit is leading you, you should not need a picture of either your Father God or Jesus Christ to properly connect with your Father in prayer. Aside from that, the modern conception of Christ as an effeminate, longhaired hippie is not based in reality. Jesus looked like the typical Jew of His day.
Of course, these things are only physical applications of this Commandment. In fact, anything that you allow to come between you and God can become an idol. Most men place themselves above God, which is a form of self-idolatry. Anytime you allow something to become more important than obeying God’s law of love, that has become an idol to you, and is a direct violation of the Second Commandment.