'Subsequent' in the Bible

And God said, "This is the guarantee of the covenant I am making with you and every living creature with you, a covenant for all subsequent generations:

There was a famine in the land, subsequent to the earlier famine that occurred in the days of Abraham. Isaac went to Abimelech king of the Philistines at Gerar.

He left those nations simply because he wanted to teach the subsequent generations of Israelites, who had not experienced the earlier battles, how to conduct holy war.