'Generation' in the Bible

And Joseph died, and all his brethren, and all that generation.

For he said, Because the LORD hath sworn that the LORD will have war with Amalek from generation to generation.

Thou shalt not bow down thyself to them, nor serve them: for I the LORD thy God am a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth generation of them that hate me;

Keeping mercy for thousands, forgiving iniquity and transgression and sin, and that will by no means clear the guilty; visiting the iniquity of the fathers upon the children, and upon the children's children, unto the third and to the fourth generation.