Romans 11:31

so also these have now been disobedient for your mercy, in order that they also may now be shown mercy.

Romans 10:16

But not all have obeyed the good news, for Isaiah says, "Lord, who has believed our report?"

Romans 11:15

For if their rejection [means] the reconciliation of the world, what [will] their acceptance [mean] except life from the dead?

Romans 11:25

For I do not want you to be ignorant, brothers, of this mystery, so that you will not be wise {in your own sight}, that a partial hardening has happened to Israel, until the full number of the Gentiles has come in,

Treasury of Scripture Knowledge

Summary

Even so have these also now not believed, that through your mercy they also may obtain mercy.

General references

Bible References

Believed

Romans 10:16
But not all have obeyed the good news, for Isaiah says, "Lord, who has believed our report?"
Romans 11:15
For if their rejection [means] the reconciliation of the world, what [will] their acceptance [mean] except life from the dead?

General references

Isaiah 55:9
"For [as] [the] heavens are {higher} than [the] earth, so my ways are {higher} than your ways, and my thoughts than your thoughts.
Micah 7:20
You will show faithfulness to Jacob, and loyal love to Abraham, as you have sworn to our ancestors from the days of old.