'Fall Away' in the Bible

and they have no real root in themselves, so they endure only for a little while; then, when trouble or persecution comes because of the word, immediately they [are offended and displeased at being associated with Me and] stumble and fall away.

Jesus said to them, “You will all fall away [and be ashamed and be afraid to be associated with Me as disciples], because it is written, ‘I will strike the Shepherd, and the sheep will be scattered.’

But Peter said to Him, “Even if they all fall away [and desert You, ashamed and afraid of being associated with You], yet I will not [do so]!”