Jews, Christians and Muslims all have a stake on the linage of Abraham. They all believe they are descendants. Yet the Bible clearly speaks of “Children of the Promise”. What promise? Look at Deut. 7:13-15 and 16-17 and 21-23 for the Promise. The children are not necessarily the children in the birth line from Abraham. I think Romans chapter 9, verses 8 & 9 (NIV) are telling (underline added):
In other words, it is not the children by physical descent who are God’s children, but it is the children of the promise who are regarded as Abraham’s offspring. For this was how the promise was stated: “At the appointed time I will return, and Sarah will have a son.”
Drop down to verse 27 and we read, Isaiah tells us: “Though the number of the Israelites be like the sand by the sea, only the remnant will be saved.” Only a remnant!
SO…what did the Jews do and what did the gentiles do? The Jews followed the Law, salvation by works, Muslims do the same; the gentiles, following the Lord Jesus, have salvation by faith (Romans 9:30-32). We see that many stumble when it comes to Jesus Christ. We read that Jesus is the cornerstone (Acts 4:11) and in addition this stone is the “stumbling stone”. It is Jesus that tears away at the three main religions; it is Jesus that is the stumbling stone! Romans 9:33 (NIV): “See, I lay in Zion a stone that causes people to stumble and a rock that makes them fall, and the one who believes in him will never be put to shame.”
Believe in Jesus Christ our LORD an Savior!