Let all the earth fear Jehovah. The Psalmist concludes that there is just reason why the whole world should reverently submit itself to the government of God, who gave it being, and who also preserves it. To fear Jehovah, and to stand in awe of him, just means to do honor to, and to reverence his mighty power. It is a mark of great insensibility not to bow at God's presence, from whom we have our being, and upon whom our condition depends. The prophet alludes to both these things, affirming that the world appeared as soon as God spake, and that it is upheld in being by his commandment; for it would not have been enough for the world to have been created in a moment, if it had not been supported in existence by the power of God. He did not employ a great array of means in creating the world, but to prove the inconceivable power of his word, he ordered that so soon as he should as it were pronounce the word, the thing should be done. The word command, therefore, confirms what I formerly said, that his speech was nothing else than a nod, or wish, and that to speak implies the same thing as to command. It is proper, however, to understand that in this nod, or command, the eternal wisdom of God displayed itself.

Let all the earth - All the inhabitants of the earth.
Fear the Lord - Worship and adore a Being of so great power. See the notes at Psalm 5:7.
Let all the inhabitants of the world - The power displayed in the works of creation appeals to all alike.
Stand in awe of him - Reverence or adore him. The expression is equivalent to "worship," fear or reverence entering essentially into the idea of worship.

Let all the earth fear the Lord - He who has thus bound, can unloose; he who has created, can destroy. He has promised life and prosperity only to the godly; let the ungodly stand in awe of him.

Let all the earth fear the Lord,.... That is, all the men that dwell upon the face of the earth. As it follows,
let all the inhabitants of the world stand in awe of him; which fear and awe design a reverence of the divine Majesty, whose divine perfections are so manifest in the works of creation; and a carefulness not to offend him, into whose hands it must be a fearful thing to fall; and the whole worship of him, which is often in Scripture expressed by the fear of him: and this is to be understood either as what is the duty of all men; for to "fear God, and keep his commandments, is the whole duty of man", Ecclesiastes 12:13; and which is incumbent on all men, in consideration of his being the Creator of them; and the obligation to it is yet more increased through his providential care of them and goodness to them; and still more should be found in them, seeing he will be the Judge of them, and has a despotic and uncontrollable power over them; and what is it that he cannot do, who has done all this before related? though none can fear him aright but such who have the grace of fear put into their hearts by the Spirit of God: or else this may be prophetically said, as what will be in the latter day, when not only the Jews shall fear the Lord and his goodness, Hosea 3:5, but when the fulness of the Gentiles being brought into the church, it shall fear and be enlarged; yea, all nations shall fear the Lord and glorify his name, and come and worship before him, Isaiah 60:5.