Deuteronomy 4:15-19

15“Therefore watch yourselves very carefully. Since you saw no form on the day that the LORD spoke to you at Horeb out of the midst of the fire, 16beware lest you act corruptly by making a carved image for yourselves, in the form of any figure, the likeness of male or female, 17the likeness of any animal that is on the earth, the likeness of any winged bird that flies in the air, 18the likeness of anything that creeps on the ground, the likeness of any fish that is in the water under the earth. 19And beware lest you raise your eyes to heaven, and when you see the sun and the moon and the stars, all the host of heaven, you be drawn away and bow down to them and serve them, things that the LORD your God has allotted to all the peoples under the whole heaven.