Back in the old testament God changed Jacob's name to be called Israel (Gen 35:10). The nation of Israel was God's chosen nation up to this point (Rom 11:32). Jacob, whose name is now Israel, is representative of God's chosen people (the elect). The "ALL" in Rom 11:32 is all of God's chosen people as represented by Jacob who is now called Israel. Not all mankind! Gen 49:2 further indicates that Jacob's name is Israel. Deut 32:9, For the Lord's portion is his people, Jacob is the lot of his inheritance. Only the elect (sheep) have eyes to see and ears to hear, not the natural man described in 1 Cor 2:14.