Fear may appropriately motivate someone into a right relationship with God. However, if fear is encouraged to remain as a motivating factor for sustaining this relationship, then that very fear undercuts its own purpose! For Paul tells us in Galatians 5 that those who are seeking to be in a right relationship (justified) through obedience have fallen from grace! Obedience is not what got you into the grace in which you now stand and obedience is not what keeps you there! The unmerited favor of God, sustained and entered into by faith or patient waiting, is what upholds through all your obedience and disobedience until the day that you are perfected in glory.