Contradiction with John 8:44
This verse states that some are of their father the devil, contrary to Romans 8:14 where it says those led by the Spirit are sons of God.
John 8:44: Ye are of [your] father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it. [of his own: or, from his own will or disposition]
Contradiction with 1 John 3:10
It contrasts the children of God with the children of the devil, suggesting not all are led by the Spirit as children of God.
1 John 3:10: In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.
Contradiction with Matthew 7:21
Implies that not everyone who claims to be associated with God is truly His child, conflicting with Romans 8:14's idea of being sons of God through the Spirit.
Matthew 7:21: Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Contradiction with Ephesians 2:2-3
Refers to those who follow worldly desires as children of wrath, which opposes the notion of being led by the Spirit as in Romans 8:14.
Ephesians 2:2-3: Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience:
Contradiction with Galatians 4:8-9
Speaks about once being enslaved to those that are not gods, suggesting a past state not led by the Spirit, contrary to the sonship described in Romans 8:14.
Galatians 4:8-9: Howbeit then, when ye knew not God, ye did service unto them which by nature are no gods.