ESV: He struck down every firstborn in Egypt, the firstfruits of their strength in the tents of Ham.
NIV: He struck down all the firstborn of Egypt, the firstfruits of manhood in the tents of Ham.
NASB: And struck all the firstborn in Egypt, The first and best of their vigor in the tents of Ham.
CSB: He struck all the firstborn in Egypt, the first progeny of the tents of Ham.
NLT: He killed the oldest son in each Egyptian family, the flower of youth throughout the land of Egypt.
KJV: And smote all the firstborn in Egypt; the chief of their strength in the tabernacles of Ham:
NKJV: And destroyed all the firstborn in Egypt, The first of their strength in the tents of Ham.