'Stumbling' in the Bible

wherefore? because -- not by faith, but as by works of law; for they did stumble at the stone of stumbling,

according as it hath been written, 'Lo, I place in Sion a stone of stumbling and a rock of offence; and every one who is believing thereon shall not be ashamed.'

for the sake of victuals cast not down the work of God; all things, indeed, are pure, but evil is to the man who is eating through stumbling.