Exodus 12:29 ¶And 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 78:50 He made a way to his anger; he spared not their soul from death, but gave their life over to the pestilence;

Psalms 135:8 Who smote the firstborn of Egypt, both of man and beast.

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

Hebrews 11:28 Through faith he kept the passover, and the sprinkling of blood, lest he that destroyed the firstborn should touch them.

Genesis 49:3 ¶Reuben, thou art my firstborn, my might, and the beginning of my strength, the excellency of dignity, and the excellency of power: