Romans 9:32

Why? Because they followed it not by faith but, as it were, by the works (of the law); therefore, they stumbled on the stumblingstone;

1 Peter 2:8

and a stone of stumbling and a rock of offense, even to those who stumble at the word, not obeying in that for which they were ordained.

Matthew 13:57

And they were offended in him. But Jesus said unto them, A prophet is not without honour except in his own country and in his own house.

Matthew 19:16-20

And, behold, one came and said unto him, Good Master, what good thing shall I do that I may have eternal life?

Luke 2:34

And Simeon blessed them and said unto Mary his mother, Behold, this child is set for the fall and rising again of many in Israel and for a sign which shall be spoken against

Luke 7:23

and blessed is whoever shall not be offended in me.

John 6:27-29

Labour not for the food which perishes, but for the food which abides unto eternal life, which the Son of man shall give unto you, for him has God the Father sealed.

Acts 16:30-34

and brought them out and said, Sirs, what must I do to be saved?

Romans 4:16

Therefore by faith, that it might be by grace, to the end the promise might be sure to all the seed, not only to that which is of the law, but also to that which is of the faith of Abraham, who is the father of us all,

Romans 10:3

For they, being ignorant of God's righteousness and going about to establish their own righteousness, have not submitted themselves unto the righteousness of God.

Romans 11:11

I say then, Have they stumbled in such a manner that they should fall completely? No, in no wise; but rather through their fall, saving health is come unto the Gentiles to provoke them unto jealousy.

1 Corinthians 1:23

but we preach Christ crucified, , unto the Jews a stumblingblock and unto the Gentiles foolishness;

1 John 5:9-12

If we receive the witness of men, the witness of God is greater: for this is the witness of God which he has testified of 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;

Bible References

Because

Romans 4:16
Therefore by faith, that it might be by grace, to the end the promise might be sure to all the seed, not only to that which is of the law, but also to that which is of the faith of Abraham, who is the father of us all,
Romans 10:3
For they, being ignorant of God's righteousness and going about to establish their own righteousness, have not submitted themselves unto the righteousness of God.
Matthew 19:16
And, behold, one came and said unto him, Good Master, what good thing shall I do that I may have eternal life?
John 6:27
Labour not for the food which perishes, but for the food which abides unto eternal life, which the Son of man shall give unto you, for him has God the Father sealed.
Acts 16:30
and brought them out and said, Sirs, what must I do to be saved?
1 John 5:9
If we receive the witness of men, the witness of God is greater: for this is the witness of God which he has testified of his Son.

They stumbled

Romans 11:11
I say then, Have they stumbled in such a manner that they should fall completely? No, in no wise; but rather through their fall, saving health is come unto the Gentiles to provoke them unto jealousy.
Matthew 13:57
And they were offended in him. But Jesus said unto them, A prophet is not without honour except in his own country and in his own house.
Luke 2:34
And Simeon blessed them and said unto Mary his mother, Behold, this child is set for the fall and rising again of many in Israel and for a sign which shall be spoken against
Luke 7:23
and blessed is whoever shall not be offended in me.
1 Corinthians 1:23
but we preach Christ crucified, , unto the Jews a stumblingblock and unto the Gentiles foolishness;

General references

Matthew 19:30
But many that are first shall be last, and many of the last shall be first.
Mark 10:31
But many of the first shall be last; and of the last first.
Luke 7:23
and blessed is whoever shall not be offended in me.
Romans 4:4
But unto him that works, the reward is not reckoned as grace, but as debt.