Caravaggio, Saint Jerome Writing (c. 1605), Galleria Borghese. Public domain.
4 verses in the King James Version. Word study for “sound” →
He layeth up sound wisdom for the righteous: he is a buckler to them that walk uprightly.
My son, let not them depart from thine eyes: keep sound wisdom and discretion:
Counsel is mine, and sound wisdom: I am understanding; I have strength.
A sound heart is the life of the flesh: but envy the rottenness of the bones.