Psalm 80:17 - 19 is in the context of one of those situations. The nation that God had taken out of Egypt was in disarray; Its defenses compromised; its people in despair. Look at the plea, specifically at the verbs that are used and the structure of the plea.
- Let - then - not turn back = cause and effect. They asked for God's intervention and pledged that in return they would not turn from Him.
- Revive - we will call = again cause and effect. They would worship God as a result of His engagement with their situation.
- Restore - we will be saved = again cause and effect. They knew that the only true restoration was from Him.