Deuteronomy 4:15-18 NIV

[15] You saw no form of any kind the day the LORD spoke to you at Horeb out of the fire. Therefore watch yourselves very carefully, [16] so that you do not become corrupt and make for yourselves an idol, an image of any shape, whether formed like a man or a woman, [17] or like any animal on earth or any bird that flies in the air, [18] or like any creature that moves along the ground or any fish in the waters below.