NET
8 and a stumbling-stone and a rock to trip over. They stumble because they disobey the word, as they were destined to do.
Darby
8 and a stone of stumbling and rock of offence; [who] stumble at the word, being disobedient to which also they have been appointed.
KJV
8 And a stone of stumbling, and a rock of offence, [even to them] which stumble at the word, being disobedient: whereunto also they were appointed.