THE HOLY BIBLE Authorized King James

Exodus (Author Moses)

12:29And it came to pass, that at midnight the LORD smote all the firstborn in the land of Egypt, from the firstborn of Pharaoh that sat on his throne unto the firstborn of the captive that was in the dungeon; and all the firstborn of cattle.

Psalms (Author Moses, David, Solomon, Asaph, Heman, Ethan, sons of Korah, compiled by Ezra)

78:51And smote all the firstborn in Egypt; the chief of their strength in the tabernacles of Ham:

105:36He smote also all the firstborn in their land, the chief of all their strength.

136:10To him that smote Egypt in their firstborn: for his mercy endureth for ever:

Original from The Bible Foundation - They claim public domain status for their original text.