Romans 9:6-8 NIV

6 It is not as though God's word1 had failed. For not all who are descended from Israel are Israel.2

References for Romans 9:6

7 Nor because they are his descendants are they all Abraham's children. On the contrary, "It is through Isaac that your offspring will be reckoned."a3

References for Romans 9:7

8 In other words, it is not the natural children who are God's children,4 but it is the children of the promise who are regarded as Abraham's offspring.5

References for Romans 9:8