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

He smote also all the first-born in their land, The chief of all their strength.

And he slew all the firstborn in their land: the firstfruits of all their labour.

And he smote every firstborn in their land, the firstfruits of all their vigour.

And He smiteth every first-born in their land, The first-fruit of all their strength,

He put to death the first child of every family in the land, the first-fruits of their strength.

He smote also all the first-born in their land, The first-fruits of all their strength.

He smote also all the firstborn in their land,.... Both of men and beasts; the firstborn of the king on the throne, and of the maidservant behind the mill, and of the captive in the dungeon; this was the last plague, and which prevailed upon the Egyptians to let Israel go, Exodus 11:5.
The chief of all their strength; or the first of their strength; the same in different words as before, their firstborn; see Genesis 49:3.

the chief--literally, "the firstlings." The ascending climax passes from the food of man to man himself. The language here is quoted from Psalm 78:51.