They were pleased to do it, and indeed they owe it to them. For if the Gentiles have shared in the Jews' spiritual blessings, they owe it to the Jews to share with them their material blessings.
NIV
They were pleased to do it; and surely they are in debt to them, for if these Gentiles have come to share in their [the Jerusalem Jews'] spiritual blessings, then they ought also to be of service to them in material blessings.
AMP
It hath pleased them verily; and their debtors they are. For if the Gentiles have been made partakers of their spiritual things, their duty is also to minister unto them in carnal things.
KJV
It is just as Isaiah said previously: "Unless the Lord Almighty had left us descendants, we would have become like Sodom, we would have been like Gomorrah."
NIV
It is as Isaiah predicted, If the Lord of hosts had not left us a seed [from which to propagate descendants], we [Israel] would have fared like Sodom and have been made like Gomorrah. [Isa. 1:9.]AMP
And as Esaias said before, Except the Lord of Sabaoth had left us a seed, we had been as Sodoma, and been made like unto Gomorrha.
KJV
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."
NIV
And they are not all the children of Abraham because they are by blood his descendants. No, [the promise was] Your descendants will be called and counted through the line of Isaac [though Abraham had an older son]. [Gen. 21:9-12.]AMP
Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.
KJV
"And, "In the very place where it was said to them, "You are not my people,' they will be called 'children of the living God."
NIV
And it shall be that in the very place where it was said to them, You are not My people, they shall be called sons of the living God. [Hos. 1:10.]AMP
And it shall come to pass, that in the place where it was said unto them, Ye are not my people; there shall they be called the children of the living God.
KJV
In other words, it is not the natural children who are God's children, but it is the children of the promise who are regarded as Abraham's offspring.
NIV
That is to say, it is not the children of the body [of Abraham] who are made God's children, but it is the offspring to whom the promise applies that shall be counted [as Abraham's true] descendants.
AMP
That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.
KJV