The following resource is from desiring God.org. So here's the summary of where we've been so far.

God's Word has not fallen even though 93 says most Jews are cursed and cut off from Christ. And the

reason it hasn't fallen is because from the beginning the promise was based on God's free election of

children of promise not children of flesh and then he gave two old testament

illustrations Isaac not Ishmael Jacob And then he gave two Old Testament illustrations, Isaac,

not Ishmael, Jacob, not Esau.

That's been the argument so far.

And now comes verses 14 to 18.

And he asked this faithful question.

Is there then injustice or unrighteousness on God's part?

And his answer is no. righteousness on God's part?

And his answer is no.

It's almost the same as after verse three,

he said, is there then a falling, a failing of the word of God?

And his answer is no.

And now yes, all right, I'll give you my answer

with my heavy explanation of unconditional election of some Israelites not others

as the beneficiaries of the promise, does that mean God is unrighteous?

Now how he argues for the righteousness of God here is very involved and not easy to grasp at first glance.

So let's see what verses 15 to 18 say

by way of argument.

Four.

...