The exact quote is 'in the earth beneath', not 'on'- as if viewed from the perspective of a human standing on the ground. That is the KJV and the NKJV.When it says the heavens above, above means above the earth. On the earth beneath, beneath refers to under the heavens. Remember that right before God gave the commandments, the Israelites crafted an image of Jehovah in the golden calf (a land animal), and this was deemed idolatry
We cannot imagine what God the Father looks like, and it seems highly degrading and blasphemous to portray Him as a calf, and then to worship that representation, it harks back to Babylonian and Egyptian paganism.
Now that Christ has come as the Messiah in human form, I do not see a problem with using an image that is not a mere symbol, but one that accurately portrays Him. The proper usage matters, that's what all the rest of us are getting at, and the RCC reminds her members the images are not to be treated as amulets or as having divine powers in and of themselves.I do not think I need to point out to you that all three of these are images or contain images that signify Christ when they were used in their proper ordination. When they were taken out of their proper usage, and all three of them were at one time or another, they no longer signified Christ.
Going down this path the sign of the Cross can become objectionable, it occurred to me, I'm not sure about it but the Amish or the Mennonites may not have any in their worship spaces. You'll find the Rose of Martin Luther in Protestant churches, I don't know if it's related to the Rosary, I've heard he had a devotion to the Virgin Mary.
We do worship Christ, the images don't diminish or hinder that, they keep us focused when we stray in our thoughts. You can do without them, to me it seems like some kind of misguided asceticism.You don't need an icon (earthly materials) to worship the true Icon (Christ Himself).
They never expected the venerated icons themselves to help. Catholic leaders like Charles Martel, Ferdinand of Castile, Andrea Doria who captured the Standard of the Caliphs at Lepanto, John Sobieski, John Hunyadi, Skanderbeg, and others faced the Muslim menace with Catholic emblems in hand and succeeded in defeating them by the grace of God, which had not been denied them due to "idolatry". Russians defeated the Turks numerous times, Michael the Brave of Romania also, Count Dracula. In Western Europe, the Protestant nations without icons became the least Christian- caused or correlated, that's another discussion.When the Muslims conquered Constantinople, despite praying to the icons for victory, the Byzantines grabbed the icons out of their churches and fled West. It was the icons that needed the people's protection, not the other way around.