This, I say, is the universal way for the deliverance of believers, concerning which the faithful Abraham received the divine assurance, “In thy seed shall all nations be blessed.” He, indeed, was by birth a Chaldaean; but, that he might receive these great promises, and that there might be propagated from him a seed “disposed by angels in the hand of a Mediator,” in whom this universal way, thrown open to all nations for the deliverance of the soul, might be found, he was ordered to leave his country, and kindred, and father’s house. Then was he himself, first of all, delivered from the Chaldaean superstitions, and by his obedience worshipped the one true God, whose promises he faithfully trusted. This is the universal way, of which it is said in holy prophecy, “God be merciful unto us, and bless us, and cause his face to shine upon us; that thy way may be known upon earth, thy saving health among all nations.” And hence, when our Savior, so long after, had taken flesh of the seed of Abraham, he says of himself, “I am the way, the truth, and the life.”
"That we may know on earth Your way" [Psalm 67:2]. "On earth," here, in this life, "we may know Your way." What is, "Your way"? That which leads to You. May we acknowledge whither we are going, acknowledge where we are as we go; neither in darkness we can do. Afar You are from men sojourning, a way to us You have presented, through which we must return to You. "Let us acknowledge on earth Your way." What is His way wherein we have desired, "That we may know on earth Your way"? We are going to enquire this ourselves, not of ourselves to learn it. We can learn of it from the Gospel: "I am the Way," [John 14:6] the Lord says: Christ has said, "I am the Way." But do you fear lest you stray? He has added, "And the Truth." Who strays in the Truth? He strays that has departed from the Truth. The Truth is Christ, the Way is Christ: walk therein. Do you fear lest you die before thou attain unto Him? "I am the Life: I am," He says, "the Way and the Truth and the Life." As if He were saying, "What do you fear? Through Me you walk, to Me you walk, in Me you rest." What therefore means, "We may know on earth Your Way," but "we may know on earth Your Christ"? But let the Psalm itself reply: lest ye think that out of other Scriptures there must be adduced testimony, which perchance is here wanting: by repetition he has shown what signified, "That we may know on earth Your Way:" and as if you were inquiring, "In what earth, what way?" "In all nations Your Salvation." In what earth, you are inquiring? Hear: "In all nations." What way are you seeking? Hear: "Your Salvation." Is not perchance Christ his Salvation? And what is that which the old Symeon has said, that old man, I say, in the Gospel, preserved full of years even unto the infancy of the Word? [Luke 2:30] For that old man took in his hands the Infant Word of God. Would He that in the womb deigned to be, disdain to be in the hands of an old man? The Same was in the womb of the virgin, as was in the hands of the old man, a weak infant both within the bowels, and in the old man's hand, to give us strength, by whom were made all things; and if all things, even His very mother. He came humble, He came weak, but clothed with a weakness to be changed into strength, because "though He was crucified of weakness, yet He lives of the virtue of God," [2 Corinthians 13:4] the Apostle says. He was then in the hands of an old man. And what says that old man? Rejoicing that now he must be loosed from this world, seeing how in his own hand was held He by whom and in whom his Salvation was upheld; he says what? "Now You let go," he says, "O Lord, Your servant in peace, for my eyes have seen Your Salvation." [Luke 2:29-30] Therefore, "May God bless us, and have pity on us; may He lighten His countenance upon us, that we may know on earth Your Way!" In what earth? "In all nations." What Way? "Your Salvation."
[AD 430] Augustine of Hippo on Psalms 67:1-2