Clement of Rome (attributed)

Moreover, also, this is comely and useful, that a man "visit orphans and widows," [James 1:27] and especially those poor persons who have many children. These things are, without controversy, required of the servants of God, and comely and suitable for them. This also, again, is suitable and right and comely for those who are brethren in Christ, that they should visit those who are harassed by evil spirits, and pray and pronounce adjurations over them, intelligently, offering such prayer as is acceptable before God; not with a multitude of fine words, well prepared and arranged, so that they may appear to men eloquent and of a good memory. Such men are "like a sounding pipe, or a tinkling cymbal;" [1 Corinthians 13:1] and they bring no help to those over whom they make their adjurations; but they speak with terrible words, and affright people, but do not act with true faith, according to the teaching of our Lord, who has said: "This kind goes not out but by fasting and prayer," offered unceasingly and with earnest mind.