I shall post from the ONT:
7:12a. Saint Bede: "The dead man is a figure of a man struck senseless by the fatal wound of his sins. And rightly is he spoken of as 'an only son of his mother.' For, though assembled from many persons, one is the perfect, immaculate virgin, Mother Church, and each one of the faithful rightly prfesses himself a son of the Church. The gate df the city, I think, is any one of the bodily senses...Whoever will not guard his senses, leaves open a way for death to enter. May Jesus make all the gates of my city, gates of justice, that, going in them, I may give praise to Thy name [Ps. 117(118):19] and praise to Thy majesty ;and that, visiting it often with thine heavenly ministers, Thou may meet no evil odor of a dead body carried forth, but that salvation shall posess its walls and praise its gates [Is. 60:18]." ]"The Gates of Death," P.L. 92. In Exposition of Luke, Lib. II, 7, col. 417; in Toal, IV:129,130]
7:12b. Saint Bede: "We are told that 'she was a widow'; for every soul which remembers that it has been redeemed by the death of her Lord and Spouse confesses the Church is a widow." [Ib.]
7:14. Saint Bede: "Those who bear him to the grave are the unclean desires which drag a man down to destruction....'And those hearing it stood still, 'when the Lord touched the bier: even as the conscience, when touched by the fear of the heavenly judgement--keeping back the pressing throng of carnal delights, and the multitude that wickedly praise it--returns ot itself, and answersin haste the voice of the Savior calling it back to life." [Ib., 131.]
7:15. Saint Ambrose: "This woman seems to be more than a woman who has by her tears deserved to obtain the resurrection of her only grown son. Holy Church, who has been forbidden to weep for Him Whom to Whom the resurrection is owed through regard for her tears, calls back to life a younger people from the funeral procession and the ashes of the grave....After Jesus' touch, he who was borne on the wood to the grave, came to life, in order ot serve as a sign that salvation must be poured out upon the people through the yoke of the Cross." [Ib., Bk. V, 90.]
7:15. Saint Kyril: "It is death that has brought men to old ageand corruption; death, therefore, has made old, that is to say, has corrupted [cf. 1 Cor. 15:56]; for, 'that which is becoming obsolete and growing old is near to disappearing [Heb. 8:13],' but Christ renews, in that He is the Life." [Hom. 36, Commentary, Ch. 7, 154.]