1 Jn 4:18 There is no fear in love, but perfect love casts out fear. For fear has to do with punishment, and whoever fears has not been perfected in love.
St. Diadochos of Photiki ca. 5th cent.
If we do not confess our involuntary sins as we should, we shall discover an ill-defined fear in ourselves at the hour of our death. We who love the Lord should pray that we should be without fear at that time; for if we are afraid then, we will not be able to freely pass the rulers of the nether-world. They will have as their advocate to plead against us the fear which our soul experiences because of its own wickedness. But the soul which experiences the love of God, at the hour of its departure, is lifted with the angels of peace above all the hosts of darkness. (Philokalia Vol. 1, pg. 295: On Spiritual Knowledge, 100)