1 Peter 2:8

a stone of stumbling, and a rock of offense. Those who stumble at the word, are disobedient unbelievers, to which, therefore, they were appointed:

1 John 5:9-12

If we receive the testimony of men, the testimony of God is greater. Now, this is the testimony of God, which he has testified concerning his Son.

Treasury of Scripture Knowledge

Summary

Wherefore? Because they sought it not by faith, but as it were by the works of the law. For they stumbled at that stumblingstone;

Because

Bible References

Because

1 John 5:9
If we receive the testimony of men, the testimony of God is greater. Now, this is the testimony of God, which he has testified concerning his Son.