Commentaries:
God Himself has kept Israel from seeing and hearing (understanding and applying) His truth, giving Israel a spirit of slumber to make possible the salvation of the Gentiles. He has determined to call and choose only a limited number from Israel in this age, allowing the rest to remain blinded. With the rest of humanity, they will rise in the second resurrection and have the opportunity for salvation.
Martin G. Collins
Basic Doctrines: The Second Resurrection
Man cannot "find" God; only God can initiate a calling. The world, including most of physical Israel, is consigned to unbelief until later in God's plan, yet most modern Israelites would say they know God or believe in Him. Romans 10:12-15 describes how God generally introduces people to Himself, though they may suppose they initiated contact with Him by "calling on the name of the Lord." Men must hear of Him through a preacher - and one whom God has sent, not one that is self-proclaimed.
Martin G. Collins
Basic Doctrines: Faith Toward God
Paul explains the fundamental reason for God's current blinding of Israel: God is working with the elect in a way He is not working with Israel yet. Thus, He has blinded Israel until He calls those Gentiles that He has determined to convert. Israel was disobedient, so He scattered and blinded her, intending to regather her and restore her understanding in the future. Then she will recognize her Savior and learn what a relationship with Him truly entails.
David C. Grabbe
Spiritual Blindness (Part One): The God of This World
Other Forerunner Commentary entries containing Romans 11:25:
Leviticus 26:25
Leviticus 26:45
Deuteronomy 30:1-10
Deuteronomy 30:1-3
Daniel 9:24-27
Matthew 10:5-7
Mark 8:26