I John 3:9 “Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.”
The Elect of God “doth not commit sin” and “cannot sin” because they are “born of God”! Now, as in many issues, the truth is, each side of a coin has its own truth. By nature, “all have sinned, and come short of the glory of God” (Romans 3:23), and “If we say that we have no sin, we deceive ourselves, and the truth is not in us.” (I John 1:8). But on the other hand/side, (the Holy Judicial Side) the Elect are “justified freely by his grace through the redemption that is in Christ Jesus” (Romans 3:24), “Much more then, being now justified by his blood, we shall be saved from wrath through him.” (Romans 5:9), “them he also justified: and whom he justified, them he also glorified” (Romans 8:30). To be “justified” is to have been rendered perfectly “just” with God’s Holy Law, which required the Substitutionary Sacrifice of our Beloved Lord and Savior. Thus, in the mind and purpose of God, the Elect Children of God, are this very day, judicially fit for Eternal Heaven with our Lord Jesus Christ. It is not possible for even one of His Children to fail to appear with Him in Heaven; for, “his seed remaineth in” them; that is, He personally indwelled each of His Own Children (Romans 8:9-11). When Paul wrote to Timothy that “he cannot deny himself” (II Timothy 2:13), he was speaking of that which our Lord imparted of Himself into each of His own Elect Children; thus, to “deny” them, would be to “deny” Himself. To affirm his point, John declares, that the “born again” Child of God “cannot sin, because he is born of God”; meaning, that our “advocate” is always “with the Father” (I John 2:1) as a perpetual assurance that our sin-debt has been paid, that “though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool” (Isaiah 1:18), and that our Home In Heaven is eternally secure in Christ Jesus our Lord!