Dominica Secunda in Quadragesima: "the kingly splendour, which is the right of the Manhood taken into God"

From the Holy Gospel according to Matthew
Matt 17:1-9
At that time, Jesus taketh unto him Peter and James, and John his brother, and bringeth them up into a high mountain apart: And he was transfigured before them. And so on.

Homily by Pope St. Leo the Great. 
From a homily on the Transfiguration of the Lord.
Jesus took Peter, and James, and John his brother, and brought them up into an exceeding high mountain apart, and manifested forth the brightness of His glory. Hitherto, though they understood that there was in Him the Majesty of God, they knew not the power of that Body which veiled the Godhead. And therefore He had individually and markedly promised to some of the disciples that had stood by Him Matth. xvi. 28 that they should “not taste of death till they had seen the Son of Man coming in His kingdom”, that is, in the kingly splendour, which is the right of the Manhood taken into God, and which He willed to make visible to those three men. This it was that they saw, for the unspeakable and unapproachable vision of the Godhead Himself which will be the everlasting life of the pure in heart, Matth. v. 8 can no man, who is still burdened with a dying body, see and live.

Saint Augustine on the impossibility of being saved without the Commandments

Continuation of the Holy Gospel according to Matthew
Matt 25:31-46
In that time, Jesus said to his disciples: When the Son of man shall come in his majesty, and all the angels with him, then shall he sit upon the seat of his majesty. And all nations shall be gathered together before him. And so on.

Homily by St. Augustine, Bishop of Hippo.
On Faith and Works, xv. 4.
If, without keeping the commandments, it be possible to attain unto life by faith only, and faith, if it hath not works, is dead, James ii. 17, how can it be true that the Lord will say to such as He shall have set on His left hand Depart from Me, ye cursed, into everlasting fire, prepared for the devil and his angels? He rebuketh them, not because they have not believed in Him, but because they have not wrought good works. Yea, lest any man should promise himself life eternal by faith only, (and faith, if it hath not works, is dead,) the Lord saith that He will gather together all nations, nations who have lived mingled together in the same countries, that we may seem to hear them which have believed indeed in Him, but have not wrought good works, (as though that their dead faith could, being alone, lead them into life eternal,) that we may seem to hear such crying unto Him, Lord, when saw we thee suffering such and such things, and did not minister unto thee?

Dominica I in Quadragesima: Jesus was led by the spirit into the desert, to be tempted by the devil

Gospel: Matt 4:1-11.
In that time, Jesus was led by the spirit into the desert, to be tempted by the devil. And when he had fasted forty days and forty nights, afterwards he was hungry. And so on.

Homily by Pope St. Gregory the Great.
16 th on the Gospels.
Some persons are accustomed to question what Spirit it was of which Jesus was led up into the wilderness, on account of the words a little farther on Then the devil taketh Him up into the holy city and again The devil taketh Him up into an exceeding high mountain. But in truth, and without any searching, we may very fitly take it that we are to believe it was the Holy Ghost Who led Him up into the wilderness; His own Spirit led Him where the evil spirit found Him to tempt Him. When however it is said that He, God and man, was taken up by the devil either into an exceeding high mountain or into the holy city, the mind shrinketh from believing, and the ears of man tingle to hear it. Yet these things we know not to be incredible, when we consider certain other things concerning Him.

Meeting Christ in the Liturgy for Dominica Quinquagesima: "we go up to Jerusalem"

From the Holy Gospel according to Luke
Luke 18:31-43
In that time, Jesus took unto him the twelve, and said to them: Behold, we go up to Jerusalem, and all things shall be accomplished which were written by the prophets concerning the Son of man. And so on.

Homily by Pope St. Gregory the Great.
2nd on the Gospels.
Our Redeemer, foreseeing that the minds of His disciples would be troubled by His suffering, told them long before both of the pains of that suffering, and of the glory of His rising again, to the end that, when they should see Him die as He had prophesied, they might not doubt that He was likewise to rise again. But, since His disciples were yet carnal, and could not receive the words telling of this mystery, He wrought a miracle before them. A blind man received his sight before their eyes, that if they could not receive heavenly things by words, they might be persuaded of heavenly things by deeds. 

Sexagesima Sunday: "The seed is the Word."

From the Holy Gospel according to Luke
Luke 8:4-15
At that time: When much people were gathered together, and were come to Jesus out of every city, he spake by a parable. A sower went out to sow his seed. And so on, and that which followeth.

Homily by Pope St. Gregory the Great.
5th on the Gospels.
Dearly beloved brethren, the passage from the Holy Gospel which ye have just heard, needeth not so much that I should explain it, as that I should seek to enforce its lesson. The Truth Himself hath explained it, and, after that, it beseemeth not man's frailty to fritter away His exposition by any further comment. But there is, in that very explanation by the Lord, somewhat, which it behoveth us well to weigh. If it were but we who bade you believe that by the seed is signified the word; by the field, the world; by the birds, the devils; and by the thorns, riches ye would perchance doubt of the truth of our explanation. Therefore the Lord Himself hath vouchsafed to give this explanation, and that, not for this parable only, but that ye may know in what manner to interpret others, whereof He hath not given the meaning.

Candlemass: On the procession and blessed candles

"We walk while we sing to God to denote that to stand still in the paths of virtue is to go back. The lights we bear in our hands represent the divine fire of love with which our hearts ought to be inflamed, and which we are to offer to God without any mixture of strange fire, the fire of concupiscence, envy, ambition, or the love of creatures. We also hold these lights in our hands to honour Christ, and to acknowledge him as the true light."

- Saint Bernard of Clairvaux