Contradiction with Matthew 17:20
This verse suggests that faith can move mountains, implying that faith is sometimes needed to achieve outcomes, whereas Romans 4:21 emphasizes God's ability to perform without mentioning dependency on human faith.
Matthew 17:20: And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.
Contradiction with James 1:6-7
This verse indicates that one must ask in faith without doubt to receive anything from the Lord, which implies a conditionality not explicitly noted in Romans 4:21's assertion of God's power to perform.
James 1:6-7: But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed.
Contradiction with Mark 9:24
This verse includes a plea for belief, indicating human doubt, contrasting with the full assurance and conviction that describes the faith mentioned in Romans 4:21.
Mark 9:24: And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief.
Contradiction with Hebrews 11:6
This verse states that without faith it is impossible to please God, implying human contribution is necessary, whereas Romans 4:21 focuses on God's capability to fulfill His promises.
Hebrews 11:6: But without faith [it is] impossible to please [him]: for he that cometh to God must believe that he is, and [that] he is a rewarder of them that diligently seek him.
Contradiction with Matthew 13:58
This account states that Jesus didn't do many mighty works due to unbelief, contrasting with Romans 4:21 which emphasizes God’s ability irrespective of human belief.
Matthew 13:58: And he did not many mighty works there because of their unbelief.