Proverbs 20:5

Counsel in the heart of man is like deep water; but a man of understanding will draw it out.

Psalm 64:6

They plot injustice, saying, "We have made a perfect plan!" Surely man's mind and heart are cunning.

Proverbs 18:4

The words of a man's mouth are like deep waters. The fountain of wisdom is like a flowing brook.

1 Corinthians 2:11

For who among men knows the things of a man, except the spirit of the man, which is in him? Even so, no one knows the things of God, except God's Spirit.

Treasury of Scripture Knowledge

Summary

Counsel in the heart of man is like deep water; but a man of understanding will draw it out.

Bible References

General references

Proverbs 18:4
The words of a man's mouth are like deep waters. The fountain of wisdom is like a flowing brook.
Psalm 64:6
They plot injustice, saying, "We have made a perfect plan!" Surely man's mind and heart are cunning.
1 Corinthians 2:11
For who among men knows the things of a man, except the spirit of the man, which is in him? Even so, no one knows the things of God, except God's Spirit.