'Childless' in the Bible

And Abram said, Lord Jehovah, what wilt thou give me? seeing I go childless, and the steward of my house is this Eliezer of Damascus.

And if a man lie with his aunt, he hath uncovered his uncle's nakedness: their sin shall they bear: they shall die childless.

And if a man take his brother's wife, it is an unclean thing: he hath uncovered his brother's nakedness: they shall be childless.

And Samuel said, As thy sword has made women childless, so shall thy mother be childless above women. And Samuel hewed Agag in pieces before Jehovah in Gilgal.