'Children' in the Bible

My little children, for whom I am again in [the pains of] labor until Christ is [completely and permanently] formed within you—

Now these facts are about to be used [by me] as an allegory [that is, I will illustrate by using them]: for these women can represent two covenants: one [covenant originated] from Mount Sinai [where the Law was given] that bears children [destined] for slavery; she is Hagar.

Now Hagar is (represents) Mount Sinai in Arabia and she corresponds to the present Jerusalem, for she is in slavery with her children.

For it is written [in the Scriptures],“Rejoice, o barren woman who has not given birth;Break forth into a [joyful] shout, you who are not in labor;For the desolate woman has many more childrenThan she who has a husband.”

And we, [believing] brothers and sisters, like Isaac, are children [not merely of physical descent, like Ishmael, but are children born] of promise [born miraculously].

So then, believers, we [who are born again—reborn from above—spiritually transformed, renewed, and set apart for His purpose] are not children of a slave woman [the natural], but of the free woman [the supernatural].