American Standard Version (ASV):
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.
King James Version (KJV):
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].