Three good lessons from the Old Testament. See if you can see echos of the same themes playing out in these chapters.
Here is a sample of the detail verses. You can listen here, and look up all the passages on your own.
Psa 81:8 Hear, O my people, and I will testify unto thee: O Israel, if thou wilt hearken unto me;
Psa 81:9 There shall no strange god be in thee; neither shalt thou worship any strange god.
Psa 81:10 I am the LORD thy God, which brought thee out of the land of Egypt: open thy mouth wide, and I will fill it.
Psa 81:11 But my people would not hearken to my voice; and Israel would none of me.