“Anyone who keeps his wealth secret and jeers at others’ doesn’t know that he consigns a forgotten soul to hell.”
ἄλλοισι δ’ ἐμπίπτων γελᾷ, ψυχὰν ᾿Αΐδᾳ τελέων
οὐ φράζεται δόξας ἄνευθεν.
Of course, Hades is also the god of wealth…
Pindar, Isthmian 1.67-8