King James Version
And they made a calf in those days, and offered sacrifice unto the idol, and rejoiced in the works of their own hands.English Standard Version
And they made a calf in those days, and offered a sacrifice to the idol and were rejoicing in the works of their hands.New International Version
That was the time they made an idol in the form of a calf. They brought sacrifices to it and held a celebration in honor of what their hands had made.