Romans 9:32

Why that? Because [they did] not [pursue it] by faith, but as [if] by works. They stumbled over the {stone that causes people to stumble},

1 Peter 2:8

and "A stone of stumbling and a rock of offense," who stumble [because they] disobey the word to which also they were consigned.

Matthew 13:57

And they were offended by him. But Jesus said to them, "A prophet is not without honor except in his [own] hometown and in his [own] household."

Matthew 19:16-20

And behold, someone came up to him [and] said, "Teacher, what good [thing] must I do so that I will have eternal life?"

Luke 2:34

And Simeon blessed them and said to his mother Mary, "Behold, this child is appointed for the fall and rise of many in Israel, and for a sign that is opposed--

Luke 7:23

And whoever is not offended by me is blessed."

John 6:27-29

Do not work for the food that perishes, but the food that remains to eternal life, which the Son of Man will give to you. For God the Father has set his seal on this one."

Acts 16:30-34

And he brought them outside [and] said, "Sirs, what must I do so that I can be saved?"

Romans 4:16

Because of this, [it is] by faith, in order that [it may be] according to grace, so that the promise may be secure to all the descendants, not only to those of the law, but also to those of the faith of Abraham, who is the father of us all

Romans 10:3

For ignoring the righteousness of God, and seeking to establish their own, they did not subject themselves to the righteousness of God.

Romans 11:11

I say then, they did not stumble so that they fell, [did they]? May it never be! But by their trespass, salvation [has come] to the Gentiles, in order to provoke them [to jealousy].

1 Corinthians 1:23

but we preach Christ crucified, to the Jews a cause for stumbling, but to the Gentiles foolishness,

1 John 5:9-12

If we receive the testimony of people, the testimony of God is greater, because this is the testimony of God that 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;

Bible References

Because

Romans 4:16
Because of this, [it is] by faith, in order that [it may be] according to grace, so that the promise may be secure to all the descendants, not only to those of the law, but also to those of the faith of Abraham, who is the father of us all
Romans 10:3
For ignoring the righteousness of God, and seeking to establish their own, they did not subject themselves to the righteousness of God.
Matthew 19:16
And behold, someone came up to him [and] said, "Teacher, what good [thing] must I do so that I will have eternal life?"
John 6:27
Do not work for the food that perishes, but the food that remains to eternal life, which the Son of Man will give to you. For God the Father has set his seal on this one."
Acts 16:30
And he brought them outside [and] said, "Sirs, what must I do so that I can be saved?"
1 John 5:9
If we receive the testimony of people, the testimony of God is greater, because this is the testimony of God that he has testified concerning his Son.

They stumbled

Romans 11:11
I say then, they did not stumble so that they fell, [did they]? May it never be! But by their trespass, salvation [has come] to the Gentiles, in order to provoke them [to jealousy].
Matthew 13:57
And they were offended by him. But Jesus said to them, "A prophet is not without honor except in his [own] hometown and in his [own] household."
Luke 2:34
And Simeon blessed them and said to his mother Mary, "Behold, this child is appointed for the fall and rise of many in Israel, and for a sign that is opposed--
Luke 7:23
And whoever is not offended by me is blessed."
1 Corinthians 1:23
but we preach Christ crucified, to the Jews a cause for stumbling, but to the Gentiles foolishness,

General references

Matthew 19:30
But many [who are] first will be last, and the last first.
Mark 10:31
But many [who are] first will be last, and the last first."
Luke 7:23
And whoever is not offended by me is blessed."
Romans 4:4
Now to the one who works, his pay is not credited according to grace, but according to his due.