19
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aYou shall consecrate to the Lord your God all the firstborn males that are born of your herd and of your flock; you shall not work with the firstborn of your herd, nor shear the firstborn of your flock.
a
Exodus 13:2, Exodus 13:12
Exodus 13
2
"aSanctify to Me every firstborn, the first offspring of every womb among the sons of Israel, both of man and beast; it belongs to Me."
Exodus 13
12
ayou shall devote to the Lord the first offspring of every womb, and the first offspring of every beast that you own; the males belong to the Lord.