1 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.
1 John 5:18 We know that whosoever is born of God sinneth not; but he that is begotten of God keepeth himself, and that wicked one toucheth him not.
John 9:31 Now we know that God heareth not sinners: but if any man be a worshipper of God, and doeth his will, him he heareth.
Most Christians are admitted sinners therefore one may discern they are not heard by nor born of God by their own admission.
God always hears the prayers of a repentant sinner....