Romans 11:35 “Who has given God so much that He needs to pay it back?”
God owes us nothing; we owe Him everything, and yet we are guilty of thinking God owes us.
Think about our prayers, we come to Him and ask that He give to us. Then we complain to Him about how tough life is, and that He needs to do something. We use words like please and help, and when it does not turn out like we thought, and we become angry.
What would my prayers be like if I really believed God owes me nothing? I believe they would be praises to Him, and never about how tough life is, because I would understand that everything in my life is because God loves me, and that all things work out for His glory, not mine.