They made a calf in Horeb, and worshipped the molten image.
Exodus 32:4-8
4
And he received them at their hand, and fashioned it with a graving tool, after he had made it a molten calf: and they said, These be thy gods, O Israel, which brought thee up out of the land of Egypt.
5
And when Aaron saw it, he built an altar before it; and Aaron made proclamation, and said, To morrow is a feast to the LORD.
6
And they rose up early on the morrow, and offered burnt offerings, and brought peace offerings; and the people sat down to eat and to drink, and rose up to play.
7
And the LORD said unto Moses, Go, get thee down; for thy people, which thou broughtest out of the land of Egypt, have corrupted themselves:
8
They have turned aside quickly out of the way which I commanded them: they have made them a molten calf, and have worshipped it, and have sacrificed thereunto, and said, These be thy gods, O Israel, which have brought thee up out of the land of Egypt.
Exodus 32:35-8
Deuteronomy 9:12-16
12
And the LORD said unto me, Arise, get thee down quickly from hence; for thy people which thou hast brought forth out of Egypt have corrupted themselves; they are quickly turned aside out of the way which I commanded them; they have made them a molten image.
13
Furthermore the LORD spake unto me, saying, I have seen this people, and, behold, it is a stiffnecked people:
14
Let me alone, that I may destroy them, and blot out their name from under heaven: and I will make of thee a nation mightier and greater than they.
15
So I turned and came down from the mount, and the mount burned with fire: and the two tables of the covenant were in my two hands.
16
And I looked, and, behold, ye had sinned against the LORD your God, and had made you a molten calf: ye had turned aside quickly out of the way which the LORD had commanded you.
Deuteronomy 9:21-16
Nehemiah 9:18
Yea, when they had made them a molten calf, and said, This is thy God that brought thee up out of Egypt, and had wrought great provocations;
1 Corinthians 10:7
Neither be ye idolaters, as were some of them; as it is written, The people sat down to eat and drink, and rose up to play.