On a time that Columcille was in Iona, the Adversary set on a certain woman of his congregation to bestow on him passing great love, to see if it might come to pass through her that he should entice him to sin with her; for of himself could he not overcome or tempt him, or bring him ever to do sin, small or great, in things pertaining to his body. And the love the woman had for him passed all bounds, so that she would liefer die than not come to reveal her love to Columcille, to try if she could get him to fulfill her desire touching the matter of having ado with her fleshly.
And she went to him to declare her purpose to him. And when this was perceived by that man that loved chastity, that subdued demons, that did strongly maintain the commands of God, that did tear out every flaw from himself and from every other, he knew the reason of her coming to him afore she told it him.
And he spake to her and said: “Woman,” saith he, “think on the judgment of Doom, and consider that it is from the dead thou hast come, and to the dead thou shalt return.”
And he did bless and consecrate her then from where he stood, and it came to pass by virtue of the blessing of Columcille, that when she heard from him the words of God, and his exhortation, all the evil desires that surrounded her love withdrew from her and her pure love remained within her, and she received from him faith and piety. So that woman became holy in the end, whereby the names of God and Columcille were magnified.
— Betha Colaim Chille, 224.