He was just gone forty days?

Exodus 32:2 says, “And Aaron said unto them, Break off the golden earrings, which are in the ears of your wives, of your sons, and of your daughters, and bring them unto me.

32:3 And all the people brake off the golden earrings which were in their ears, and brought them unto Aaron.

32:4 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..”  Moses is gone forty days and Aaron builds a new god?  God picked a real winner for his choice as to the head minister of the tabernacle.