Romans 11:25

25 So that you may not claim to be wiser than you are, brothers and sisters, I want you to understand this mystery: a hardening has come upon part of Israel, until the full number of the Gentiles has come in.

Romans 11:25 In-Context

23 And even those of Israel, if they do not persist in unbelief, will be grafted in, for God has the power to graft them in again.
24 For if you have been cut from what is by nature a wild olive tree and grafted, contrary to nature, into a cultivated olive tree, how much more will these natural branches be grafted back into their own olive tree.
25 So that you may not claim to be wiser than you are, brothers and sisters, I want you to understand this mystery: a hardening has come upon part of Israel, until the full number of the Gentiles has come in.
26 And so all Israel will be saved; as it is written, "Out of Zion will come the Deliverer; he will banish ungodliness from Jacob."
27 "And this is my covenant with them, when I take away their sins."

Footnotes 1

New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.