Moses
Exodus 32:8ESV·traditional attribution

They have turned aside quickly out of the way that I commanded them. They have made for themselves a golden calf and have worshiped it and sacrificed to it and said, ‘These are your gods, O Israel, who brought you up out of the land of Egypt!’”

John Calvin Reformed @genevareformer

8. They have turned aside quickly out of the way. So speedy a transgression, as I have said, aggravates their crime. God then states the nature of their corruption, that they have worshipped a molten calf, that is to say, the work of their own hands.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. God acquaints Moses with what was doing in the camp while he was absent, Exo 32:7, Exo 32:8. He could have told him sooner, as soon as the first step was taken towards it, and have hastened him down to prevent it; but he suffered it to come to this height, for wise and holy ends, and then sent him down to punish it.

Commenting on Exodus 32:7-14

John Gill Reformed Baptist @doctorgill

They have turned aside quickly out of the way which I commanded them,.... The Targum of Jonathan adds, by way of explanation,"on Sinai, saying, ye shall not make to yourselves an image, or figure, or any similitude.''This was the command God had given to them; this the way he had directed them to walk in; from this they turned aside, by making the golden calf...