Galatians 6:7 (NIV)
7Do not be deceived: God cannot be mocked. A man reaps what he sows.
Ecclesiastes 1:6-7 (NIV)
6The wind blows to the south and turns to the north; round and round it goes, ever returning on its course.
7All streams flow into the sea, yet the sea is never full. To the place the streams come from, there they return again.