While the holy man sat in his little cell engaged in writing, on a sudden his countenance changed, and he poured forth this cry from his pure breast, saying, “Help! Help!”
Two of the brothers who stood at the door, namely, Colga, son of Cellach, and Lugne Mocublai, asked the cause of such a sudden cry.
The venerable man answered, saying, “I ordered the angel of the Lord who was just now standing among you to go quickly to the relief of one of the brothers who is falling from the highest point of a large house which is now being built in the Oakwood Plain (Derry).”
And the saint added afterwards these words, saying, “How wonderful and almost unspeakable is the swiftness of angelic motion, like, as I imagine, to the rapidity of lightning.
“For the heavenly spirit who just now flew away from us when that man began to fall, arrived there to support him, as it were, in the twinkling of an eye, before his body reached the ground; nor was the man who fell able to feel any fracture or bruise.
“How wonderful, I say, is that most swift and timely help which could be given so very quickly, even though such an extent of land and sea lay between!”
[…] While the blessed man was living in the Iouan island (Hy, now Iona), he made this known to the assembled brethren with very great earnestness, saying, “Today I wish to go alone to the western plain of this island; let none of you therefore follow me.”
They obeyed, and he went alone, as he desired. But a brother, who was cunning, and of a prying disposition, proceeded by another road, and secretly placed himself on the summit of a certain little hill which overlooked the plain, because he was very anxious to learn the blessed man’s motive for going out alone.
While the spy on the top of the hill was looking upon him as he stood on a mound in the plain, with arms extended upwards, and eyes raised to heaven in prayer, then, strange to tell, behold a wonderful scene presented itself, which that brother, as I think not without the leave of God, witnessed with his own eyes from his place on the neighbouring hill, that the saint’s name and the reverence due to him might afterwards, even against his wishes, be more widely diffused among the people, through the vision thus vouchsafed.
For holy angels, the citizens of the heavenly country, clad in white robes and flying with wonderful speed, began to stand around the saint whilst he prayed; and after a short converse with the blessed man, that heavenly host, as if feeling itself detected, flew speedily back again to the highest heavens.
Adomnán of Iona (628-704): Life of St. Columba, Book 3, 16 & 17; from Life of Saint Columba, Founder of Hy, Written by Adamnan, Ninth Abbot of that Monastery, ed. William Reeves, (Edinburgh: Edmonston and Douglas, 1874) @ Internet Medieval Source Book; icon of St Columba by Aidan Hart.