Proverbs 20:27-29

Amplified Bible

²⁷ 
The ^[a]spirit (conscience) of man is the lamp of the Lord,
Searching and examining all the innermost parts of his being.^(A)
28 
Loyalty and mercy, truth and faithfulness, protect the king,
And he upholds his throne by lovingkindness.
²⁹ 
The glory of young men is their [physical] strength,
And the honor of aged men is their gray head [representing wisdom and experience].