'Fourth Generation' in the Bible

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

keeping lovingkindness 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, upon the third and upon the fourth generation.