The third strophe (vv. 13-18) grounds the psalmist's relation to God on God's creative act. The mysteries of conception and birth naturally struck the imagination of non-scientific man, and are to the psalmist the direct result of Divine power. He touches them with poetic delicacy and devout awe, casting a veil of metaphor over the mystery, and losing sight of human parents in the clear vision of the Divine Creator. There is room for his thought of the origin of the individual life, behind modern knowledge of embryology. In ver. 13 the word rendered in the A.V. "possessed" is better understood in this context as meaning "formed," and that rendered there "covered" (as in Psalm cxl. 7) here means to _plait_ or _weave together_, and picturesquely describes the interlacing bones and sinews, as in Job x. 11. But description passes into adoration in ver. 14. Its language is somewhat obscure. The verb rendered "wondrously made" probably means here "selected" or "distinguished," and represents man as the _chef d'œuvre_ of the Divine Artificer. The psalmist cannot contemplate his own frame, God's workmanship, without breaking into thanks, nor without being touched with awe. Every man carries in his own body reasons enough for reverent gratitude. The word for "bones" in ver. 15 is a collective noun, and might be rendered "bony framework." The mysterious receptacle in which the unborn body takes shape and grows is delicately described as "secret," and likened to the hidden region of the underworld, where are the dead. The point of comparison is the mystery enwrapping both. The same comparison occurs in Job's pathetic words, "Naked came I out of my mother's womb, and naked shall I return thither." It is doubtful whether the word rendered above "wrought like embroidery" refers to a pattern wrought by weaving or by needlework. In any case, it describes "the variegated colour of the individual members, especially of the viscera" (Delitzsch). The mysteries of antenatal being are still pursued in ver. 16, which is extremely obscure. It is, however, plain that _a_ sets forth the Divine knowledge of man in his first rudiments of corporeity. "My shapeless mass" is one word, meaning anything rolled up in a bundle or ball. But in _b_ it is doubtful what is referred to in "they all." Strictly, the word should point back to something previously mentioned; and hence the A.V. and R.V. suppose that the "shapeless mass" is thought of as resolved into its component parts, and insert "my members"; but it is better to recognise a slight irregularity here, and to refer the word to the "days" immediately spoken of, which existed in the Divine foreknowledge long before they had real objective existence in the actual world. The last clause of the verse is capable of two different meanings, according as the Hebrew text or margin is followed. This is one of a number of cases in which there is a doubt whether we should read "not" or "to him" (or "it").