New Revised Standard Version
Just as you do not know how the breath comes to the bones in the mother’s womb, so you do not know the work of God, who makes everything.

Contemporary English Version
No one can explain how a baby breathes before it is born. So how can anyone explain what God does? After all, God created everything.

New American Bible
Just as you do not know how the life breath enters the human frame in the mother’s womb, So you do not know the work of God, who is working in everything.

Douay-Rheims Bible
As thou knowest not what is the way of the spirit, nor how the bones are joined together in the womb of her that is with child: so thou knowest not the works of God, who is the maker of all.

As thou knowest not what is the way of the spirit, nor how the bones are joined together in the womb of her that is with child: so thou knowest not the works of God, who is the maker of all.

thou knowest not what

John 3:8 The Spirit breatheth where he will and thou hearest his voice: but thou knowest not whence he cometh and whither he goeth. So is every one that is born of the Spirit.

nor

Psalm 139:14,15 I will praise thee, for thou art fearfully magnified: wonderful are thy works, and my soul knoweth right well. . . .

even

Ecclesiastes 7:24 Much more than it was: it is a great depth, who shall find it out?

Ecclesiastes 8:17 And I understood that man can find no reason of all those works of God that are done under the sun: and the more he shall labour to seek, so much the less shall he find: yea, though the wise man shall say, that he knoweth it, he shall not be able to find it.

Job 5:9 Who doth great things, and unsearchable and wonderful things without number:

Job 26:5-14 Behold the giants groan under the waters, and they that dwell with them. . . .

Job 36:24-33 Remember that thou knowest not his work, concerning which men have sung. . . .

Job 37:23 We cannot find him worthily: he is great in strength, and in judgment, and in justice, and he is ineffable.

Job 38:4 Where wast thou when I laid the foundations of the earth? tell me if thou hast understanding.

Job 39:1-41:34 Knowest thou the time when the wild goats bring forth among the rocks, or hast thou observed the hinds when they fawn? . . .

Psalm 40:5 Thou hast multiplied thy wonderful works, O Lord my God: and in thy thoughts there is no one like to thee. I have declared and I have spoken they are multiplied above number.

Psalm 92:5 O Lord, how great are thy works! thy thoughts are exceeding deep.

Psalm 104:24 How great are thy works, O Lord ? thou hast made all things in wisdom: the earth is filled with thy riches.

Isaiah 40:28 Knowest thou not, or hast thou not heard? the Lord is the everlasting God, who hath created the ends of the earth: he shall not faint, nor labour, neither is there any searching out of his wisdom.

Romans 11:33 O the depth of the riches of the wisdom and of the knowledge of God! How incomprehensible are his judgments, and how unsearchable his ways!