John 3:8

The wind blows where it wills, and you hear its voice, but you do not know where it comes from or where it is going. So it is with every one who has been born of the Spirit."

Romans 11:33

Oh, the depths of the riches, both of the wisdom and the knowledge of God! How unfathomable are his judgments, and how unsearchable his paths!

Treasury of Scripture Knowledge

Summary

As thou knowest not what is the way of the spirit, nor how the bones do grow in the womb of her that is with child: even so thou knowest not the works of God who maketh all.

Thou knowest not what

General references

Bible References

Thou knowest not what

John 3:8
The wind blows where it wills, and you hear its voice, but you do not know where it comes from or where it is going. So it is with every one who has been born of the Spirit."

Even

Romans 11:33
Oh, the depths of the riches, both of the wisdom and the knowledge of God! How unfathomable are his judgments, and how unsearchable his paths!

General references

John 9:10
So they asked him, "How then were your eyes opened?"