Some part of a field of his possession - Rather, a part of the land of his inheritance.

The seed thereof - i. e. the quantity of seed required to sow it properly. Thus the value of about 5 1/2 bushels (an homer) was about 6 pounds, 9 shillings, 2d. (50 shekels. See Exodus 38:24.)

Some part of a field - Though the preceding words are not in the text, yet it is generally allowed they should be supplied here, as it was not lawful for a man to vow his whole estate, and thus make his family beggars, in order to enrich the Lord's sanctuary: this God would not permit. The rabbins teach that the land or field, whether good or bad, was valued at forty-eight shekels, for all the years of the jubilee, provided the field was large enough to sow a homer of barley. The חמר chomer was different from the עמר omer: the latter held about three quarts, the former, seventy-five gallons three pints; See the note on Exodus 16:16. Some suppose that the land was rated, not at fifty shekels for the whole of the years of the jubilee, for this would be but about 3s. per annum; but that it was rated according to its produce, fifty shekels for every homer of barley it produced.

And if a man shall sanctify unto the Lord some part of a field of his possession,.... That which he enjoyed by inheritance from his father, to distinguish it from a field of his own purchase, as in Leviticus 27:22; and which might be devoted, not all of it, but a part of it; partly that he might have something to live upon, or to improve for a livelihood for himself and family, and partly that estates might not be alienated entirely from their families and tribes in which they were:

then thy estimation shall be according to the seed thereof; not according to the field, the goodness or badness of that, one field being good and another bad, as Jarchi observes, but according to the quantity of seed which it produced, or rather which it required for the sowing of it:

an homer of barley seed shall be valued at fifty shekels of silver; which was near six pounds of our money; and here we must carefully distinguish between an "omer", beginning with an "o", and an "homer", beginning with an "h"; not observing this has led some learned men into mistakes in their notes on this place, for an "omer" was the tenth part of an "ephah", Exodus 16:36; and an "ephah" is but the tenth part of an "homer", Ezekiel 45:11; which makes a very great difference in this measure of barley, for an homer of it contained ten ephahs or bushels; and even according to this account a bushel of barley is rated very high, for ten bushels at fifty shekels, reckoning a shekel half a crown, or them at six pounds five shillings, are at the rate of twelve shillings and sixpence a bushel, which is too high a price for barley; wherefore as an ephah, the tenth part of an homer, contained three seahs or pecks, and which some call bushels, then an homer consisted of thirty bushels, which brings down the value of it to little more than two shillings a bushel, which is much nearer the true value of barley; but the truth of the matter is, that the value of barley for sowing is not ascertained, as our version leads us to think; for the words should be rendered, if the "seed be an homer of barley", it, the field, shall be valued "at fifty shekels of silver": if the field take so much seed to sow it as the quantity of an homer of barley, then it was to be rated at fifty shekels of silver; and if it took two homers, then it was to be rated at an hundred shekels, and so on.

With regard to the vowing of land, a difference was made between a field inherited and one that had been purchased.

Leviticus 27:16

If any one sanctified to the Lord "of the field of his possession," i.e., a portion of his hereditary property, the valuation was to be made according to the measure of the seed sown; and an omer of barley was to be appraised at fifty shekels, so that a field sown with an omer of barley would be valued at fifty shekels. As an omer was equal to ten ephahs (Ezekiel 45:11), and, according to the calculation made by Thenius, held about 225 lbs., the fifty shekels cannot have been the average value of the yearly produce of such a field, but must be understood, as it was by the Rabbins, as the value of the produce of a complete jubilee period of 49 or 50 years; so that whoever wished to redeem the field had to pay, according to Mishnah, Erachin vii. 1, a shekel and a fifth per annum.

And if a man shall sanctify unto the LORD some part of a field of his possession, then thy estimation shall be according to the seed thereof: an {i} homer of barley seed shall be valued at fifty shekels of silver.

(i) Homer is a measure containing ten ephahs, read of an ephah in Ex 16:16,36.

27:16 Of his possession - That is, which is his by inheritance, because particular direction is given about purchased lands, Lev 27:22. And he saith, part of it, for it was unlawful to vow away all his possessions, because thereby he disabled himself from the performance of divers duties, and made himself burdensome to his brethren. According to the seed - That is, according to the quantity and quality of the land, which is known by the quantity of seed which it can receive and return. Fifty - shekels - Not to be paid yearly, 'till the year of jubilee, but once for all, as is most probable, Because here is no mention of any yearly payment, but only of one payment. Because it is probable that lands were moderately valued, that men might be rather encouraged to make such vows, than deterred by excessive impositions. But if this were yearly rent, it was an excessive rate, and much more than the land ordinarily yielded. For an omer is but the tenth part of an ephah, about a pottle of our measure, which quantity of seed would not extend very far, and in some lands would yield but an inconsiderable crop, especially in barley, which was cheaper than wheat and which for that reason, among others, may be mentioned rather than wheat.

an...: or, the land of an homer, etc

16-24. if a man shall sanctify unto the Lord some aprt of a field of his possession, &c.-In the case of acquired property in land, if not redeemed, it returned to the donor at the Jubilee; whereas the part of a hereditary estate, which had been vowed, did not revert to the owner, but remained attached in perpetuity to the sanctuary. The reason for this remarkable difference was to lay every man under an obligation to redeem the property, or stimulate his nearest kinsman to do it, in order to prevent a patrimonial inheritance going out from any family in Israel.

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.