Proverbs 20:25-30

It is a trap for a man to [speak a vow of consecration and] say rashly, “It is holy!” And [not until] afterward consider [whether he can fulfill it]. A wise king sifts out the wicked [from among the good] And drives the [threshing] wheel over them [to separate the chaff from the grain]. The spirit (conscience) of man is the lamp of the LORD, Searching and examining all the innermost parts of his being. [1 Cor 2:11] Loyalty and mercy, truth and faithfulness, protect the king, And he upholds his throne by lovingkindness. The glory of young men is their [physical] strength, And the honor of aged men is their gray head [representing wisdom and experience]. Blows that wound cleanse away evil, And strokes reach to the innermost parts.