Mattityahu 6:16-18

Orthodox Jewish Bible

¹⁶ And whenever you undergo a tzom (fast), don’t be like the sullen tzevuim (hypocrites), for they disfigure their faces to parade their tzom (fast). Omein, truly I say to you, they have received their sachar (reward).

¹⁷ But when you undergo a tzom, anoint your rosh with shemen (oil) and wash your face

¹⁸ so that your tzom is concealed from Bnei Adam but not from your Av Asher b’Seter (Father Who is in Secret). And your Av HaRoeh b’seter (Father the One seeing in secret) will give you sachar.