“...when you understand that God is near you and that you move about within God and that He sees whatever you do, and you are careful not to sadden Him—since He sees everything inside and out—then you don’t sin because you see Him, you love Him, and you are careful not to sadden Him, “for He is at your right hand.” Therefore, everyone who sins does not see God, but is blind.”

Monastic Wisdom: The Letters of Elder Joseph the Hesychast