How does the love of God stop a person from sinning? When the heart is so full of love, there is no need for selfishness (which is what causes sin). The Fullness Gospel is all about relationship. You'll know the Father by His goodness.There were two trees in the garden. Adam and Eve thought knowing good and evil would be helpful. They could just avoid evil and do good. But even doing the good of the Tree of the Knowledge of Good and Evil won't bring life.