Graven Images
Exodus 20:4 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. 5 Thou shalt not bow down thyself to them, nor serve them: for I the LORD 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;
This is just my opinion stemming from an experience I had.
I hadn't been saved very long when I printed up a picture of Jesus and of the fake lady of Guadalupe and hung them on my walls. I wasn't catholic, but almost immediately I began to kneel in front of the picture of Jesus and pray. I believe God directed me away from that pretty quickly and I threw the pictures away.
Some claim that a picture of Jesus is just a picture no different than one of a member of your family. I disagree with that. You don't look at a picture of a family member and think "diety". They are a creation from the dust of the ground just as you are. But when you look at a picture of Jesus you know that He is God. You don't have just a picture of a 100% man, but of Jesus who is 100% God. What is your initial thought when you think of God? To fall on your face in worship.
Why, if pagans are so gullable as to worship a cow, or a statue of a man, or a block of carved wood would you think a picture of one who is supposed to be Jesus Christ would not be tempting? I don't think pictures of Jesus and angels and all that belong in a church because there are folks like me who are too weak. A cross without the image of His body is different. The cross isn't God. I'm not tempted to worship a tree because a tree isn't God. The cross itself is not Jesus.
I think this is one reason why catholics have been swallowed so deeply into idolatry. They have been engulfed by images all around them, in church and at home. They bow down to these images in worship and have gotten so caught up in it that they even bless and sprinkle carved concrete blocks of angels.
I'm against pictures personally. If you can hang pictures of Jesus in the comfort of your own home without temptation to you or your family, then that's your business, but I don't think they belong in the church.