Leviticus 27:9-11

9 And if it be a beast, whereof men bring an offering unto the LORD, all that any man giveth of such unto the LORD shall be holy.
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.
11 And if it be any unclean beast, of which they do not offer a sacrifice unto the LORD, then he shall present the beast before the priest:

Leviticus 27:9-11 Meaning and Commentary

INTRODUCTION TO LEVEITICUS 27

This chapter contains various laws concerning vows made unto the Lord, whether of persons whose estimation was to be made by the priest, according to their age, sex, and condition, Le 26:1-8; or of beasts, clean and unclean, good or bad, Le 26:9-13; or of houses, fields, and lands, the estimation of which was to be according to its seed, and the time of its being set apart, whether from or after the year of jubilee, and the number of years to it, Le 26:14-25; with this exception to the above laws, that no firstling of the Lord's might be sanctified, and if an unclean beast it might be redeemed, but nothing devoted to the Lord, whether of man, beast, or field, might be sold or redeemed, Le 26:26-29; and the chapter is concluded with some laws concerning the redemption or change of tithes, what might or what might not be redeemed or changed, Le 26:30-34;

The King James Version is in the public domain.