"Owe no man any thing, but to love one another:
for he that loveth another hath fulfilled the law."
People do this with God as well as others. "God if I do this, then you will do (XYZ)." You fill in the (XYZ). It is as though God is some sort of Slot Machine that they believe they can just put in a quarter, and pull the handle. I don't believe these are bad people, don't get me wrong. These are untaught or mis-informed people. God is a God of faith. Faith is the currency of Heaven. Right believing leads to joy and hope. Wrong believing leads to disappointment and discouragement.
"But to all who did receive him, who believed in his name,
he gave the right to become
children of God,"