Mark 4:17; Mark 9:42; Mark 14:29

17 And have no root in themselves, and so endure but for a time: afterward, when affliction or persecution ariseth for the word's sake, immediately they are offended .
42 And whosoever shall offend one of these little ones that believe in me, it is better for him that a millstone were hanged about his neck, and he were cast into the sea.
29 But Peter said unto him, Although all shall be offended , yet will not I.