The relative at the beginning of the last clause of ver. 1 seems to require that the initial exclamation should not be isolated, as it is in the last verse; but, in any case, the two methods of revelation must be taken in the closest connection, and brought into line as parallel media of revelation.
Ver. 2 gives the second of these. The sudden drop from the glories of the heavens to the babble and prattle of infancy and childhood is most impressive, and gives extraordinary force to the paradox that the latter's witness is more powerful to silence gainsayers than that of the former. This conviction is expressed in a noble metaphor, which is blurred by the rendering "strength." The word here rather means _a strength_ in the old use of the term--that is, a stronghold or fortress--and the image, somewhat more daring than colder Western taste finds permissible, is that, out of such frail material as children's speech, God builds a tower of strength, which, like some border castle, will bridle and still the restless enemy. There seems no sufficient reason for taking "children and sucklings" in any but its natural meaning, however the reference to lowly believers may accord with the spirit of the psalm. The children's voices are taken as a type of feeble instruments, which are yet strong enough to silence the enemy. Childhood, "with no language but a cry," is, if rightly regarded in its source, its budding possibilities, its dependence, its growth, a more potent witness to a more wondrous name than are all the stars. In like manner, man is man's clearest revelation of God. The more lowly he is, the more lofty his testimony. What are all His servants' words but the babbling of children who "do not know half the deep things they speak"? God's strongest fortress is built of weakest stones. The rendering of the LXX., which is that used by our Lord in the Temple when He claimed the children's shrill hosannas as perfected praise, is an explanation rather than a translation, and as such is quite in the line of the psalmist's meaning. To find in the "children and sucklings" a reference either to the humble believers in Israel or to the nation as a whole, and in the "enemy and the vengeful man" hostile nations, introduces thoughts alien to the universality of the psalm, which deals with humanity as a whole and with the great revelations wide as humanity. If the two parts of the psalm are to be kept together, the theme of the compendious first portion must be the same as that of the second, namely, the glory of God as revealed by nature and man, but most chiefly by the latter, notwithstanding and even by his comparative feebleness.
The second part (vv. 3-8) expands the theme of the first. The nightly sky is more overwhelming than the bare blue vault of day. Light conceals and darkness unveils the solemn glories. The silent depths, the inaccessible splendours, spoke to this psalmist, as they do to all sensitive souls, of man's relative insignificance, but they spoke also of the God whose hand had fashioned them, and the thought of Him carried with it the assurance of His care for so small a creature, and therefore changed the aspect of his insignificance. To an ear deaf to the witness of the heavens to their Maker, the only voice which sounds from their crushing magnificence is one which counsels unmitigated despair, insists on man's nothingness, and mocks his aspirations. If we stop with "What is man?" the answer is, A fleeting nothing. The magnitude, the duration, the multitudes of these awful suns and stars dwarf him. Modern astronomy has so far increased the impression that it has landed many minds in blank unbelief that God has visited so small a speck as earth, and abundant ridicule has been poured on the arrogance which dreams that such stupendous events, as the Christian revelation asserts, have been transacted on earth for man. If we begin with man, certainly his insignificance makes it supremely absurd to suppose him thus distinguished; but if we begin at the other end, the supposition takes a new appearance of probability. If there is a God, and men are His creatures, it is supremely unlikely that He should not have a care of them. Nothing can be more absurd than the supposition of a dumb God, who has never spoken to such a being as man. The psalmist gives full weight to man's smallness, his frailty, and his lowly origin, for his exclamation, "What is man?" means, "How little is he!" and he uses the words which connote frailty and mortality, and emphasise the fact of birth as if in contrast with "the work of Thy fingers"; but all these points only enhance the wonderfulness of what is to the poet an axiom--that God has personal relations with His creature. "Thou art mindful of him" refers to God's thought, "Thou visitest him" to His acts of loving care; and both point to God's universal beneficence, not to His special revelation. The bitter parody in Job vii. 17, 18, takes the truth by the other handle, and makes the personal relations those of a rigid inspector on the one hand and a creature not worth being so strict with on the other. Mindfulness is only watchfulness for slips, and visiting means penal visitation. So the same fact may be the source of thankful wonder or of almost blasphemous murmuring.