Answer:
Tigris and Euphrates Rivers
Explanation:
Here's a photo just in case
The seven-step cycle involved: Israel being delivered, which would lead to Israel having reverence for god, then slipping up and finding idolatry and sin - the bad things, which would lead them into enslavement, next asking for God's help, a judge would come and Israel would be delivered or saved or come again and the cycle would repeat.