Contradiction with Hebrews 6:4-6
These verses suggest that it is possible for those who have once been enlightened and tasted the heavenly gift to fall away, which contradicts the idea of being kept by the power of God through faith unto salvation.
Hebrews 6:4-6: For [it is] impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,
Contradiction with Galatians 5:4
This verse indicates that Christ has become of no effect to those who seek justification by the law, suggesting that people can fall from grace, contradicting the assurance of protection in faith mentioned in 1 Peter 1:5.
Galatians 5:4: Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace.
Contradiction with 2 Peter 2:20-21
These verses suggest that people who have known the way of righteousness and then turn away are worse off than if they had never known it, contradicting the promise of being kept by the power of God.
2 Peter 2:20-21: For if after they have escaped the pollutions of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein, and overcome, the latter end is worse with them than the beginning.
Contradiction with John 15:6
In this verse, Jesus states that if anyone does not abide in him, they are cast forth as a branch and burned, suggesting that remaining in salvation is conditional, which contradicts the assurance in 1 Peter 1:5.
John 15:6: If a man abide not in me, he is cast forth as a branch, and is withered; and men gather them, and cast [them] into the fire, and they are burned.
Contradiction with Matthew 24:13
This verse emphasizes the need for endurance to be saved, implying conditions for salvation, which contrasts with the assurance of God's protection through faith given in 1 Peter 1:5.
Matthew 24:13: But he that shall endure unto the end, the same shall be saved.