'Children' in the Bible

an educator of the senseless, a teacher of little children, because you have in the law the essential features of knowledge and of the truth --

His faith did not weaken when he thought about his own body (which was already as good as dead now that he was about a hundred years old) or about Sarah's inability to have children,

For all who are led by God's Spirit are God's children.

The Spirit itself beareth witness with our spirit, that we are the children of God:

And if children, then heirs; heirs of God, and joint-heirs with Christ; if so be that we suffer with him, that we may be also glorified together.

For the creation is eagerly awaiting the revelation of God's children,

Because the creature itself also shall be delivered from the bondage of corruption into the glorious liberty of the children of God.

Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.

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.

Not only that, but when Rebekah had conceived children by one man, our ancestor Isaac --

(For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth;)

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.

Esaias also crieth concerning Israel, Though the number of the children of Israel be as the sand of the sea, a remnant shall be saved: