en_tn/psa/105/036.md

He killed every firstborn in their land, the firstfruits of all their strength

Here the second phrase about the "firstfruits" is used to describe the "firstborn" in the first phrase. AT: "He killed every firstborn in their land, which were the firstfruits of all their strength" or "Then Yahweh killed the oldest son in every house of the people of Egypt" (See: rc://en/ta/man/translate/figs-parallelism and rc://en/ta/man/translate/figs-metaphor)