Romans 9:32

Wherefore? because they sought it not by faith, but as it were by works. They stumbled at the Stone of stumbling;

1 Peter 2:8

and "a stone of stumbling, and rock of offense"; who stumble, being disobedient to the word, to which also they were appointed.

Matthew 13:57

And they were finding in Him occasion to stumble. And Jesus said to them "a prophet is not without honor, except in his own country, and in his own house."

Matthew 19:16-20

And, behold, one, having come near, said to Him, "Teacher, what good thing shall I do, that I may have eternal life?"

Luke 7:23

And happy is he, whosoever shall find no cause of stumbling in Me."

John 6:27-29

Work not for the food that perishes, but for the food that abides unto eternal life, which the Son of Man will give to you; for Him God the Father sealed."

Acts 16:30-34

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

Romans 4:16

For this cause it is of faith, that it may be according to grace; to the end that the promise may 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, being ignorant of God's righteousness, and seeking to establish their own, they did not subject themselves to the righteousness of God;

Romans 11:11

I Say, then, did they stumble, that they might fall? It could not be! But by their trespass salvation has come to the gentiles to provoke them to rivalry.

1 Corinthians 1:23

but we preach Christ crucified; to the Jews, a stumbling-block, and to the gentiles foolishness;

1 John 5:9-12

If we receive the testimony of men, the testimony of God is greater; because this is the testimony of God, that He hath 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;

Bible References

Because

Romans 4:16
For this cause it is of faith, that it may be according to grace; to the end that the promise may 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, being ignorant of God's righteousness, and seeking to establish their own, they did not subject themselves to the righteousness of God;
Matthew 19:16
And, behold, one, having come near, said to Him, "Teacher, what good thing shall I do, that I may have eternal life?"
John 6:27
Work not for the food that perishes, but for the food that abides unto eternal life, which the Son of Man will give to you; for Him God the Father sealed."
Acts 16:30
and, having brought them out, he 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; because this is the testimony of God, that He hath testified concerning His Son.

They stumbled

Romans 11:11
I Say, then, did they stumble, that they might fall? It could not be! But by their trespass salvation has come to the gentiles to provoke them to rivalry.
Matthew 13:57
And they were finding in Him occasion to stumble. And Jesus said to them "a prophet is not without honor, except in his own country, and in his own house."
Luke 7:23
And happy is he, whosoever shall find no cause of stumbling in Me."
1 Corinthians 1:23
but we preach Christ crucified; to the Jews, a stumbling-block, and to the gentiles foolishness;

General references

Matthew 19:30
But many that are first shall be last, and last first."
Mark 10:31
But many that are first shall be last; and the last first."
Luke 7:23
And happy is he, whosoever shall find no cause of stumbling in Me."
Romans 4:4
Now to him that works the reward is not reckoned as of grace, but as of debt;