Romans 11:31

so now they also have been disobedient at a time when you are receiving mercy; so that to them too there may now be mercy.

Romans 10:16

But, some will say, they have not all hearkened to the Good News. No, for Isaiah asks, "Lord, who has believed the Message they have heard from us?"

Romans 11:15

For if their having been cast aside has carried with it the reconciliation of the world, what will their being accepted again be but Life out of death?

Romans 11:25

For there is a truth, brethren, not revealed hitherto, of which I do not wish to leave you in ignorance, for fear you should attribute superior wisdom to yourselves--the truth, I mean, that partial blindness has fallen upon Israel until the great mass of the Gentiles have come in;

Treasury of Scripture Knowledge

Summary

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

Bible References

Believed

Romans 10:16
But, some will say, they have not all hearkened to the Good News. No, for Isaiah asks, "Lord, who has believed the Message they have heard from us?"
Romans 11:15
For if their having been cast aside has carried with it the reconciliation of the world, what will their being accepted again be but Life out of death?