Deuteronomy 9:16
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.
Cross-reference
Deuteronomy 9:12 is God telling Moses about the sin before he sees it, which Moses then witnesses in verse 16.
Deuteronomy 9:25 records Moses' intercession for the people after he saw their sin in verse 16.
Exodus 32:19 describes Moses seeing the golden calf and shattering the tablets, the same event recounted in Deuteronomy 9:16.
In Acts 7:40, Stephen recounts the Israelites' demand for Aaron to make gods, the sin Moses saw in Deuteronomy 9:16.
Acts 7:41 describes the making of the calf and sacrifices, directly parallel to the sin Moses witnessed in Deuteronomy 9:16.
Exodus 32:4 recounts Aaron making the golden calf, the very sin Moses saw in Deuteronomy 9:16.
Exodus 32:8 records God's words about the people quickly turning aside and making a calf, the same sin Moses describes in Deuteronomy 9:16.
1 Corinthians 10:7 cites the golden calf incident as a warning against idolatry, quoting 'sat down to eat and drink'.
Judges 2:17 echoes the same 'turned aside quickly' pattern — Israel repeatedly abandons God's way after the golden calf.