2 Samuel 1:5

And David said unto the young man that told him, "How knowest thou that Saul and Jonathan his son be dead?"

Proverbs 14:15

An ignorant body believeth all things; but whoso hath understanding, looketh well to his goings.

Proverbs 25:2

It is the honour of God to keep a thing secret; but the king's honour is to search out a thing.

Treasury of Scripture Knowledge

Summary

And David said unto the young man that told him, How knowest thou that Saul and Jonathan his son be dead?

Bible References

How knowest

Proverbs 14:15
An ignorant body believeth all things; but whoso hath understanding, looketh well to his goings.
Proverbs 25:2
It is the honour of God to keep a thing secret; but the king's honour is to search out a thing.