Romans 9:32

Why? Because they sought it not by faith, but as it were by the works of the law. For they stumbled at that stumbling-stone;

1 Peter 2:8

And a stone of stumbling, and a rock of offense, even to them who stumble at the word, being disobedient: to which also they were appointed.

Matthew 13:57

And they were offended in him. But Jesus said to them, A prophet is not without honor, save in his own country, and in his own house.

Matthew 19:16-20

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

Luke 2:34

And Simeon blessed them, and said to 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 he, to whom I shall not be a stumbling block.

John 6:27-29

Labor not for the food which perisheth, but for that food which endureth to everlasting life, which the Son of man will give to you: for him hath 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 it is of faith, that it might be by grace; to the end the promise might be sure to all the seed, not to that only which is of the law, but to that also 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 seeking to establish their own righteousness, have not submitted themselves to the righteousness of God.

Romans 11:11

I say then, Have they stumbled that they should fall? By no means: but rather through their fall salvation is come to the Gentiles, to provoke them to jealousy.

1 Corinthians 1:23

But we preach Christ crucified, to the Jews a stumbling-block, and to the Greeks foolishness;

1 John 5:9-12

If we receive the testimony of men, the testimony of God is greater: for this is the testimony of God which he hath 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 it is of faith, that it might be by grace; to the end the promise might be sure to all the seed, not to that only which is of the law, but to that also 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 seeking to establish their own righteousness, have not submitted themselves to the righteousness of God.
Matthew 19:16
And behold, one came and said to him, Good Master, what good thing shall I do that I may have eternal life?
John 6:27
Labor not for the food which perisheth, but for that food which endureth to everlasting life, which the Son of man will give to you: for him hath 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 testimony of men, the testimony of God is greater: for this is the testimony of God which he hath testified of his Son.

They stumbled

Romans 11:11
I say then, Have they stumbled that they should fall? By no means: but rather through their fall salvation is come to the Gentiles, to provoke them to jealousy.
Matthew 13:57
And they were offended in him. But Jesus said to them, A prophet is not without honor, save in his own country, and in his own house.
Luke 2:34
And Simeon blessed them, and said to 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 he, to whom I shall not be a stumbling block.
1 Corinthians 1:23
But we preach Christ crucified, to the Jews a stumbling-block, and to the Greeks foolishness;

General references

Matthew 19:30
But many that are first shall be last, and the last shall be first.
Mark 10:31
But many that are first shall be last; and the last first.
Luke 7:23
And blessed is he, to whom I shall not be a stumbling block.
Romans 4:4
Now to him that worketh, is the reward not reckoned of grace, but of debt.