This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

Yes.

Galatians 5:4 View context

Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace.

Hebrews 6:4-6 View context

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,

And have tasted the good word of God, and the powers of the world to come,

If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put [him] to an open shame.

2 Peter 2:20-21 View context

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.

For it had been better for them not to have known the way of righteousness, than, after they have known [it], to turn from the holy commandment delivered unto them.

No.

John 10:28 View context

And I give unto them eternal life; and they shall never perish, neither shall any [man] pluck them out of my hand.

Romans 8:38-39 View context

For I am persuaded, that neither death, nor life, nor angels, nor principalities, nor powers, nor things present, nor things to come,

Nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord.