An excerpt from "Biblical Plus.org" entitled, "Romans 9:1-25" states: "The Jews thought that God must certainly save them. They thought they had a birth claim. Were they not the children of Abraham? Surely they had some right to it. This chapter battles the question of right. No man has any right to the grace of God. The terms are inconsistent. There can be no right to that which is free favor. We are all condemned criminals, and if pardoned, it must be as the result of pure mercy, absolute mercy, for desert there is none in any one of us." This article may be viewed at: Romans 9:1-25/bibliaplus.org/en/commentaries/9/spurgeon-bible-commentary/romans/9/1-25
Reference: Romans 9:7