Contradiction with Hebrews 6:4-6
This verse suggests a possibility of falling away after being enlightened, contradicting the assurance of steadfastness in calling and election as indicated in 2 Peter 1:10.
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 1 Corinthians 10:12
This verse warns believers to take heed lest they fall, which contrasts with the notion of not falling if making one's calling and election sure in 2 Peter 1:10.
1 Corinthians 10:12: Wherefore let him that thinketh he standeth take heed lest he fall.
Contradiction with Galatians 5:4
It discusses the possibility of being fallen from grace, which seems contradictory to the assurance of steadfastness in 2 Peter 1:10.
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 Romans 11:22
This verse warns that continuation in God's goodness is conditional and cutting off is possible, contrasting with the certainty implied in 2 Peter 1:10.
Romans 11:22: Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness, if thou continue in [his] goodness: otherwise thou also shalt be cut off.
Contradiction with 1 Timothy 4:1
The prediction that some shall depart from the faith contradicts the assurance of not falling as indicated in 2 Peter 1:10.
1 Timothy 4:1: Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;