"O YOU poor and silly and thoughtless and unreflecting and senseless Galatians (Americans)! Who has fascinated or bewitched or put a spell over you with the attitude (it takes me to initiate it and God will fill in where I fall short)? It was to unto you--right before your very eyes--Jesus Christ (the Messiah) was openly and graphically set forth and understood as crucified both with and in you, not just for you.
Let me ask you this one question: Did you receive the Holy Spirit as the result of obeying the Law and doing its works, or was it by hearing the message of trusting Jesus? Was it from obeying a law of rituals or from the message of trust? Are you so foolish and so senseless and so silly? Having begun your new spiritual way of living by and through the Holy Spirit, are you now reaching perfection by dependence on flesh rules of behavior? Have you suffered so many things and experienced so much of Christ, all for nothing for no purpose--if it really is to no purpose and in vain you have trusted Him?" (Galatians 3:1-4, my expansion of AMPC)
Simply put. Christ in you is your one and the only hope of God being seen by this age. It is not your good behavior initiated by the human will, but His presence ruling YOUR mind, heart, soul, and strength, in and through love. That Godly attitude will end the effort to create good behavior by efforts of your flesh, or mind, or will, or strength. Only God can both will and do to His good pleasure. God began this you with Him, and He will complete it.