Isaiah 49:15

If then you know how to give good gifts to your children, even though you are sinful [human beings], how much more [likely] is it that your Father in heaven will give good things to those who ask Him?

they do not have any sense; they do not keep their promises; they fail to show natural affection; and they are merciless.

Now in response to the [proclamation of the] good news [about Christ], the Jews became [God's] enemies for the sake of you [Gentiles]. But concerning [God's] select people, these Jews became [God's] dearly loved ones for the sake of their forefathers [i.e, who believed God's promises regarding their descendants].

(As He said to our forefathers), He has helped His servants, the Israelites, [showing] that He remembered to be merciful