God called Israel out of Egypt so that they would worship Him. However, the Israelites, through the golden calf, tried to build their own god. They turned back and idolized Egypt over God. Heartbroken and in righteous anger, God punishes sin and forgives. What are idols in our lives we need repent of? 

Exodus 32:34

“But now go, lead the people to the place about which I have spoken to you; behold, my angel shall go before you. Nevertheless, in the day when I visit, I will visit their sin upon them.”