'Stumble' in the Bible

and blessed is every one who does not stumble and fall because of my claims."

Then will many stumble and fall, and they will betray one another and hate one another.

Then said Jesus, "This night all of you will stumble and fail in your fidelity to me; for it is written, 'I will strike the Shepherd, and the sheep of the flock will be scattered in all directions.'

"All may stumble and fail," said Peter, "but I never will."