One of the easiest ways to drift from grace back into law is to ask a question that sounds completely reasonable: What do I need to do? How do I believe correctly? How do I become patient enough, obedient enough, loving enough, surrendered enough, or spiritually mature enough for God to act? The vocabulary may sound Christian, but the center of causation can quietly move from God back to man.
Scripture presents another order. God gives, God works, God supplies righteousness, Christ authors and finishes faith, the Spirit produces fruit, and God gives the increase. The believer genuinely lives, chooses, responds, works, believes, and participates, but he is never restored to the position of independent source.
This may be one of the deepest distinctions between law and grace. Law continually places the question before the self and asks what the self can produce. Grace reveals a life received from another Source, until even the believer's willing, doing, faith, fruit, and increase ultimately return in thanksgiving to God.
“For of him, and through him, and to him, are all things: to whom be glory for ever. Amen.” Romans 11:36 KJV