2 Kings 20:18 - Matthew Poole's English Annotations on the Holy Bible

Which thou shalt beget, i.e. of thy grandchildren, who are oft called sons. They shall be servants to that heathen monarch, whereby both their bodies will be subject to slavery, and the lusts of their lords, and their souls exposed to the peril of idolatry, and all sorts of wickedness; which must needs be very grievous to so good a man as Hezekiah, and was indeed a very sore judgment; whereby God would teach the world the great evil of sin, yea, even of those sins which are generally esteemed but small and venial; for such were those sins of Hezekiah, noted upon 2 Kings 20:17.