Psalm 105:36
ESV
He struck down all the firstborn in their land, the firstfruits of all their strength.
NIV
Then he struck down all the firstborn in their land, the firstfruits of all their manhood.
NASB
He also fatally struck all the firstborn in their land, The first fruits of all their vigor.
CSB
He struck all the firstborn in their land, all their first progeny.
NLT
Then he killed the oldest son in each Egyptian home, the pride and joy of each family.
KJV
He smote also all the firstborn in their land, the chief of all their strength.
NKJV
He also destroyed all the firstborn in their land, The first of all their strength.