The earth has given its increase Mention having been made of the principal act of the Divine favor, notice is next taken of the temporal blessings which he confers upon his children, that they may have everything necessary to complete their happiness. And here it is to be remembered, that every benefit which God bestowed upon his ancient people was, as it were, a light held out before the eyes of the world, to attract the attention of the nations to him. From this the Psalmist argues, that should God liberally supply the wants of his people, the consequence would be, to increase the fear of his name, since all ends of the earth would, by what they saw of his fatherly regard to his own, submit themselves with greater cheerfulness to his government.

Then shall the earth yield her increase - The word rendered "increase" - יבול yebûl - means properly produce, or that which the earth produces when properly cultivated. It is rendered "increase," as here, in Leviticus 26:4, Leviticus 26:20; Deuteronomy 32:22; Judges 6:4; Job 20:28; Psalm 78:46; Psalm 85:12; Ezekiel 34:27; Zac 8:12; and fruit, in Deuteronomy 11:17; Habakkuk 3:17; Haggai 1:10. It does not elsewhere cccur. The Hebrew verb here is in the past tense - "has yielded her increase," but the connection seems to demand that it shall be rendered in the future, as the entire psalm pertains to the future - to the diffusion of the knowledge of the way of God, Psalm 67:2; to the desire that the nations might praise him, Psalm 67:3-5; and to the fact that God would bless the people, Psalm 67:6-7. Thus understood, the idea is, that the prevalence of true religion in the world would be connected with prosperity, or that it would tend greatly to increase the productions of the earth. This, it would do,
(a) as such an acknowledgment of God would tend to secure the divine favor and blessing on those who cultivate the earth, preventing the necessity, by way of judgment, of cutting off its harvests by blight, and drought, and mildew, by frost, and storm, and destructive insects, caterpillars, and locusts;
(b) as it would lead to a much more extensive and general cultivation of the soil, bringing into the field multitudes, as laborers, to occupy its waste places, who are now idle, or intemperate, or who are cut down by vice and consigned to an early grave.
If all who are now idle were made industrious - as they would be by the influence of true religion; if all who by intemperance are rendered worthless, improvident, and wasteful, were made sober and working people; if all who are withdrawn from cultivating the earth by wars - who are kept in standing armies, consumers and not producers - or who are cut down in battle, should be occupied in tilling the soil, or should become producers in any way; and if all who are now slaves, and whose labor is not worth half as much as that of freemen, should be restored to their equal rights, - the productions of the earth would at once be increased many times beyond the present amount. The prevalence of true religion in the world, arresting the cause of idleness and improvidence, and keeping alive those who are now cut off by vice, by crime, and by the ravages of war, would soon make the whole world assume a different aspect, and would accomplish the prediction of the prophet Isaiah 35:1 that the "wilderness and the solitary place shall be glad, and that the desert shall rejoice and blossom as the rose." The earth has never yet been half cultivated. Vast tracts of land are still wholly unsubdued and uninhabited. No part of the earth has yet been made to produce all that it could be made to yield; and no one can estimate what the teeming earth might be made to produce if it were brought under the influence of proper cultivation. As far as the true religion spreads, it will be cultivated; and in the days of the millenium, when the true religion shall be diffused over all continents and islands, the earth will be a vast fruitful field, and much of the beauty and the fertility of Eden be reproduced in every land.
And God, even our own God, shall bless us - The true God; the God whom we adore. That is, He will bless us with this abundant fertility; he will bless us with every needed favor.

The earth yield her increase - As the ground was cursed for the sin of man, and the curse was to be removed by Jesus Christ, the fertility of the ground should be influenced by the preaching of the Gospel; for as the people's minds would become enlightened by the truth, they would, in consequence, become capable of making the most beneficial discoveries in arts and sciences, and there should be an especial blessing on the toil of the pious husbandman. Whenever true religion prevails, every thing partakes of its beneficent influence.

[Then] shall (d) the earth yield her increase; [and] God, [even] our own God, shall bless us.
(d) He shows that where God favours there will be abundance of all other things.

Then shall the earth yield her increase,.... Not literally the land of Israel, as in some copies of the Targum, and as Kimchi interprets it; see Leviticus 26:3; but mystically and spiritually the church of God in the times of the Messiah, Ezekiel 34:23; the word of God preached in the world is the seed sown in it; converts to Christ are the increase or fruit of it; and the church is God's husbandry, where it is yielded or brought forth; and this increase is of God, and is owing to the efficacy of his grace attending the ministration of the word, 1-Corinthians 3:6; it had its accomplishment in part in the first times of the Gospel, when it was preached by the apostles throughout the earth, and brought forth fruit everywhere, Colossians 1:5; and has been fulfilling more or less ever since, and will appear more abundantly in the latter day; a large increase and a plentiful harvest of souls shall be brought in, both Jews and Gentiles: or this may be understood of the fruitfulness of believers in Christ, who may be called "earth", because of their common original from the earth with the rest of mankind; because they are inhabitants of the earth; and because they have earthly as well as heavenly principles in them; but more especially because they are the good ground on whom the seed of the word falls and becomes fruitful; or are the earth which drinks in the rain of the Gospel, and of grace, and brings forth fruit meet for them, by whom it is dressed, and receives blessing of God, Matthew 13:23; these yield the fruits of the Spirit, increase in grace, and abound in the exercise of it; bring forth fruits meet for repentance, being filled with the fruits of righteousness by Christ; for the increase and fruit yielded by them are owing to the grace of God, to their grafting into Christ the vine, and to the influence of the blessed Spirit. Some of the ancients understand this of the incarnation of Christ; see Psalm 85:11; then "the earth" is the Virgin Mary, who was, as to her original, of the earth, earthly; of whose earthly substance Christ took flesh, and is called the fruit of her womb; yea, the fruit of the earth, Luke 1:42; for though he is the Lord from heaven, as to his divine nature, and came down from thence, not by change of place, but by assumption of nature; yet, as to his human nature, he was made of a woman, and is the seed of the woman, the promised seed, in whom all nations of the earth were to be blessed; and it here follows:
and God, even our own God, shall bless us; not as the God of nature and providence only; but as the God of grace, as a covenant God in Christ, in which sense he is peculiarly his people's own God, so as he is not others; and as such he blesses them with all spiritual blessings in Christ: or the repetition of the word "God", with the affix "our own", may denote the certainty of the divine blessing, the assurance had of it, and the great affection of the persons that express it: and some think, because the word is repeated three times in this verse and Psalm 68:7, respect is had to the trinity of Persons in the Godhead; God the Father blesses his people in Christ with the blessings of justification, pardon, adoption, and eternal life: the Son, who is Immanuel, God with us, God in our nature, our own God, God manifest in the flesh; he blesses with the same blessings of grace, peace, and eternal happiness; he was raised up of God as man and Mediator, and sent to bless his people, Acts 3:26.

The blessings of a fruitful harvest are mentioned as types of greater and spiritual blessings, under which all nations shall fear and love God.

Them - When the people of the earth shall be converted to God, God will cause it to yield them abundance of all sorts of fruits. Under which one blessing, all other blessings both temporal and spiritual are comprehended. Our own - He who is Israel's God in a peculiar manner.