Cross reference
Ecclesiastes 8:17
17 then I saw all the work of God, that man can't find out the work that is done under the sun, because however much a man labors to seek it out, yet he won't find it. Yes even though a wise man thinks he can comprehend it, he won't be able to find it.
Ecclesiastes 3:11
11 He has made everything beautiful in its time. He has also set eternity in their hearts, yet so that man can't find out the work that God has done from the beginning even to the end.
Romans 11:33
33 Oh the depth of the riches both of the wisdom and the knowledge of God! How unsearchable are his judgments, and his ways past tracing out!
Psalms 73:16
16 When I tried to understand this, It was too painful for me;
Ecclesiastes 7:23-24
23 All this have I proved in wisdom. I said, "I will be wise;" but it was far from me.
24 That which is, is far off and exceedingly deep. Who can find it out?
Job 5:9
9 Who does great things that can't be fathomed, Marvelous things without number;
Isaiah 40:28
28 Have you not known? have you not heard? The everlasting God, Yahweh, the Creator of the ends of the earth, doesn't faint, neither is weary; there is no searching of his understanding.
Ecclesiastes 11:5
5 As you don't know what is the way of the wind, Nor how the bones grow in the womb of her who is with child; Even so you don't know the work of God who does all.
Proverbs 30:3-4
3 I have not learned wisdom, Neither do I have the knowledge of the Holy One.
4 Who has ascended up into heaven, and descended? Who has gathered the wind in his fists? Who has bound the waters in his garment? Who has established all the ends of the earth? What is his name, and what is his son's name, if you know?
Psalms 104:24
24 Yahweh, how many are your works! In wisdom have you made them all. The earth is full of your riches.
Psalms 40:5
5 Many, Yahweh, my God, are the wonderful works which you have done, And your thoughts which are toward us. They can't be set in order to you; If I would declare and speak of them, they are more than can be numbered.
Job 11:7-9
7 "Can you fathom the mystery of God? Or can you probe the limits of the Almighty?
8 They are high as heaven. What can you do? Deeper than Sheol: what can you know?
9 The measure of it is longer than the earth, And broader than the sea.