18 But if the field is dedicated after the Year of Jubilee, the priest will assess the land's value in proportion to the number of years left until the next Year of Jubilee. Its assessed value is reduced each year.

Matthew Henry's Commentary on Leviticus 27:18

Commentary on Leviticus 27:14-25

(Read Leviticus 27:14-25)

Our houses, lands, cattle, and all our substance, must be used to the glory of God. It is acceptable to him that a portion be given to support his worship, and to promote his cause. But God would not approve such a degree of zeal as ruined a man's family.