I consider this courage the Lord gave me against the devils one of the great favors He granted me. For that a soul should be intimidated by or fearful of anything other than offending God is a serious disadvantage.
Since we have an all-powerful King and so great a Lord that He can do all and that He brings all under His subjection, there is nothing to fear, if one walks, as I said, in truth in the presence of His Majesty and with a pure conscience.
Hence, as I said, I would desire all fears so as not to offend for an instant Him who in an instant can annihilate us, because it pleases His Majesty that there be no one against us whom He will not put to flight.
Saint Teresa of Avila
The Book of Her Life, Chap. 26, no. 1 (excerpt)
Teresa of Avila, St. 1985, The Collected Works of St. Teresa of Avila, translated from the Spanish by Kavanaugh, K; Rodriguez, O, ICS Publications, Washington DC.