It is belief in Yeshua that brings salvation and obedience is engendered by that belief. John put it simply. "No one who lives in him keeps on sinning. No one who continues to sin has either seen him or known him." 1 John 3:6
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If its as you say, youll never make it to heaven and you lose your salvation at least once a day.
The reason that one who lives in Him does not sin, is because HE does not sin and HE is our covering and He cannot sin.
He exchanged His life for ours. We have no sin because of Him.