The central core of the psalm may either be taken as summons to the nations or as expression of desire for them. The depth of the longing or the stringency of the summons is wonderfully given by that fourfold repetition of the same words in vv. 3 and 5, with the emphatic "all of them" in the second clause of each. Not less significant is the use of three names for the aggregations of men--nations (ver. 2), peoples, and tribes. All are included, whatever bond knits them in communities, whatever their societies call themselves, however many they are. The very vagueness gives sublimity and universality. We can fill the vast outline drawn by these sweeping strokes; and wider knowledge should not be attended with narrowed desires, nor feebler confidence that the Light shall lighten every land. It is noticeable that in this central portion the deeds of God among the nations are set forth as the ground of their praise and joy in Him. Israel had the light of His face, and that would draw men to Him. But all peoples have the strength of His arm to be their defender, and the guidance of His hand by providences and in other ways unrecognised by them. The "judgments" here contemplated are, of course, not retribution for evil, but the aggregate of dealings by which God shows His sovereignty in all the earth. The psalmist does not believe that God's goodness has been confined to Israel, nor that the rest of the world has been left orphaned. He agrees with Paul, "That which may be known of God is manifest in them, for God manifested it to them."
The final strophe (vv. 6, 7) is substantially a repetition of vv. 1, 2, with the addition that a past fact is laid as the foundation of the desires or hopes of future blessings. "The earth has yielded her increase." This may show that the psalm is a harvest hymn, but it does not necessarily imply this. The thought may have been born at any time. The singer takes the plain fact that, year by year, by mysterious quickening which he recognises as of God, the fertile earth "causes the things sown in it to bring forth and bud," as an evidence of Divine care and kindliness, which warrants the desire and the confidence that all blessings will be given. It seems a large inference from such a premise; but it is legitimate for those who recognise God as working in nature, and have eyes to read the parables amid which we live. The psalmist reminds God of His own acts, and, further, of His own name, and builds on these his petitions and his faith. Because He is "our God" He will bless us; and since the earth has, by His gift, "yielded her increase," He will give the better food which souls need. This the singer desires, not only because he and his brethren need it, but because a happy people are the best witnesses for a good King, and worshippers "satisfied with favour and full of the blessing of the Lord" proclaim most persuasively, "Taste, and see that God is good." This psalm is a truly missionary psalm, in its clear anticipation of the universal spread of the knowledge of God, in its firm grasp of the thought that the Church has its blessings in order to the evangelisation of the world, and in its intensity of longing that from all the ends of the earth a shout of praise may go up to the God who has sent some rays of His light into them all, and committed to His people the task of carrying a brighter illumination to every land.