Bible Verses about “staying in the church”

“Jesus answered them, "Didn't I choose you, the twelve, and one of you is a devil?"”

“Now he spoke of Judas, the son of Simon Iscariot, for it was he who would betray him, being one of the twelve.”

“Jesus said therefore to the twelve, "You don't also want to go away, do you?"”

“Simon Peter answered him, "Lord, to whom would we go? You have the words of eternal life.”

“We have come to believe and know that you are the Christ, the Son of the living God."”