He shall not alter it, nor change it. — The identical animal vowed is to be delivered; no change whatever, even if it is in the substitution of a better for an inferior animal, is permitted. The stress laid upon this part of the enactment is indicated by the employment here of two verbs of the same import. If he who vows does change the one he dedicated to the Lord, both the animals, the one he originally vowed and the one he substituted for it, are alike holy, and must be delivered to the sanctuary.
Related Commentaries of Leviticus 27:10
Leviticus 27:10
10 He shall not alter it, nor change it, a good for a bad, or a bad for a good: and if he shall at all change beast for beast, then it and the exchange thereof shall be holy.