What was the importance of the covenant between God and the Hebrews?

The Hebrews believed that God would protect their temple from being destroyed.
The Hebrews believed that God would return them to Ur if they followed the commandments.
The Hebrews believed that God would give them a homeland if they followed God’s commands.
The Hebrews believed that God led them out of Egypt, and that they needed to worship Abraham.