Read Exodus 32-40
Forty days Moses had been up on the mountain meeting with God. It only took forty day for the people to turn from their promise to do all that the Lord has spoken (Exodus 19:8) and turn to sin (Exodus 32:1) and make a false god for themselves.
God was ready to consume them (Exodus 40:10), but Moses interceded for the people. We have Jesus making intercession for us before God (Romans 8:34). So God relented (Exodus 32:14.
On returning to the camp, and seeing the extent of their sin, Moses breaks the two tablets of stone on which God had written the law, burned the idol of the golden calf in the fire, ground it it to powder and mixed it with water, and made them drink it (Exodus 32:19-20).
Calling the people to come and stand on the Lord’s side, the sons of Levi gathered with him. And Moses told them to put on their swords and go through the camp killing those who didn’t. And about three thousand men of the people fell that day (Exodus 32:27-28).
Moses goes back up the mountain to make atonement for the people and offers himself up in their place (Exodus 32:31-32). This is such a great picture of Jesus offering Himself up for our sins.
God instructs Moses to depart for the Promised Land promising to go before them (Exodus 33:1-2). Moses receives two new tablets of stone from God (Exodus 34:1) and renews the covenant (Exodus 34:10). Along the way Moses instructs the people the words the Lord has commanded them to do regarding worship and the building of the tabernacle and the making of the tools and other implements for sacrifice (Exodus 35-39). Moses looked over all the work, and they had done as the Lord had commanded and blessed them (Exodus 39:42).
The tabernacle and worship of God would be the centre of their lives. As it was erected for the first time, the cloud which went before them, covered the tabernacle and the glory of the Lord filled the tabernacle. Whenever the cloud remained, they remained. And when the cloud was taken up from above the tabernacle, they would continue on their journey (Exodus 40:34-38).