'Child' in the Bible

Have I conceived all this people? have I begotten them, that thou shouldest say unto me, Carry them in thy bosom, as a nursing father beareth the sucking child, unto the land which thou swarest unto their fathers?

Then Joshua, the son of Nun, who had been Moses' servant from the time when he was a child, said, My lord Moses, let them be stopped.

You are to kill every male child and every woman who has had sexual relations with a man.