Search me, O God, and know my heart! Try me and know my thoughts! And see if there be any grievous way in me, and lead me in the way everlasting! (Psalm 139:23-24)
But when you fast, anoint your head and wash your face, so that you may not appear to others to be fasting, except to your Father who is hidden. And your Father who sees what is hidden will repay you.” Matthew 6:16–18