1 Samuel 14:14
And that first slaughter, which Jonathan and his armor bearer made, was about twenty men, within as it were an half acre of land, which a yoke of oxen might plow.
Nave's Topical Index

Isaiah 5:10
Yes, ten acres of vineyard shall yield one bath, and the seed of an homer shall yield an ephah.
Nave's Topical Index

Acre

Acre: The Indefinite Quantity of Land a Yoke of Oxen Could Plow in a Day

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