There is so much in this world that can drive us away from God, and we are gluttons for it! And God knows this, that's why the second commandment is to not create any idols. Make nothing, put nothing in place of God. Whilst the second commandment focuses on not creating graven images, things that we think might offer some resemblance to God, a real issue for Israel, our problem is often that we create idols of things that aren't inherently in and of themselves.
We do it with our favourite toy, with our spouse, with children, with our work, our hobbies or our houses. Things that can so easily become all consuming and dominate our lives to the extent that they become our entire focus. Our lives become orientated to them, rather than to God.
It's no coincidence that this second commandment comes when it does - after the reminder of who God is and what he has done for Israel. "I am the LORD your God, who bought you out of Egypt." God says, "You shall have no other God's before me." God has revealed himself in such amazing ways to his people that to make something to represent God, or to worship something else is daft. More to the point, something that we could make - even the greatest of artist or sculptors - would not even come close to being a true representation of God. In fact, to look at an idol as our God, actually takes away from his glory because we would miss the mark by such a long way.
To avoid this completely God commands, for our own good, that we do not make idols of anything.
When Jesus comes we get even greater revelation:
You see Jesus is revealed as the image of God, the first born of all creation. The author of the letter to the Hebrews starts with these words about Jesus:
The Bible points us to Jesus. Jesus shows us the Father. Jesus is the image of God we need to look to and to worship.
No idols, because God has revealed himself to us, ultimately in Christ.
No idols, because Jesus is the one who rightly sits on the throne at the Father's side.
No idols, because the LORD is far greater than we can ever imagine.