Albert Barnes Commentary Deuteronomy 7:15

"And Jehovah will take away from thee all sickness; and none of the evil diseases of Egypt, which thou knowest, will he put upon thee, but will lay them upon all them that hate thee." — Deuteronomy 7:15 (ASV)

There seems to be here not so much a reference to the plagues miraculously inflicted by God on Egypt , as to the terrible diseases with which Egypt, above other countries, was infested. Compare Deuteronomy 28:27, Deuteronomy 28:35. It is not without significance that Egypt, which in Scripture represents the world as contrasted with the Church, should thus, above other lands, lie under the power of disease and death.