Solomon
Proverbs 25:2ESV·traditional attribution

It is the glory of God to conceal things, but the glory of kings is to search things out.

Matthew Henry Presbyterian @wholebiblehenry

Here is, 1. An instance given of the honour of God: It is his glory to conceal a matter. He needs not search into any thing, for he perfectly knows every thing by a clear and certain view, and nothing can be hidden from him; and yet his own way is in the sea and his path in the great waters.

Commenting on Proverbs 25:2-3

John Gill Reformed Baptist @doctorgill

It is the glory of God to conceal a thing,.... Secret things belong unto him, and they are kept so by him: many things which he does reveal, yet the "modus" or manner of them remains hidden; as what relates to his own being, and manner of subsisting; the trinity of Persons in the Godhead; the filiation or the Son, and the procession of the...

Jamieson-Fausset-Brown Reformed @jfbcommentary

God's unsearchableness impresses us with awe (compare Isa 45:15; Rom 11:33). But kings, being finite, should confer with wise counsellors;