Contradiction with John 11:4
Jesus states that Lazarus's sickness is not unto death, implying a different outcome than Martha's mourning in John 11:21.
John 11:4: When Jesus heard [that], he said, This sickness is not unto death, but for the glory of God, that the Son of God might be glorified thereby.
Contradiction with Ecclesiastes 9:5
This verse says the dead know nothing, contrasting Martha's belief that Jesus could have saved Lazarus from death.
Ecclesiastes 9:5: For the living know that they shall die: but the dead know not any thing, neither have they any more a reward; for the memory of them is forgotten.
Contradiction with Psalm 115:17
The dead do not praise the Lord, which contrasts Martha's hope that Jesus could have prevented Lazarus's death in John 11:21.
Psalm 115:17: The dead praise not the LORD, neither any that go down into silence.
Contradiction with Hebrews 9:27
It is appointed for men to die once, after this the judgment, which suggests a finality contrary to the possibility implied by Martha's statement in John 11:21.
Hebrews 9:27: And as it is appointed unto men once to die, but after this the judgment: