Second Sunday of Lent

From the Introit:

Remember, O Lord, Thy bowels of compassion, and Thy mercies that are from the beginning of the world, lest at any time our enemies rule over us: deliver us, O God of Israel, from all our tribulations.

Epistle from the letter of Blessed Paul the Apostle to the Thessalonians (4: 1-17):

Brethren, We pray and beseech you in the Lord Jesus that, as you have received from us how you ought to walk and to please God, so also you would walk, that you may abound the more. For you know what precepts I have given to you by the Lord Jesus. For this is the will of God, your sanctification: that you should abstain from fornication, that every one of you should know how to possess his vessel in sanctification and honor; not in the passion of lust, like the Gentiles that know not God: and that no man overreach nor circumvent his brother in business: because the Lord is the Avenger of all these things, as we have told you before and have testified. For God hath not called us unto uncleanness, but unto sanctification: in Christ Jesus our Lord.

Gospel according to St. Matthew (17: 1-9):

At that time Jesus took Peter and James, and John his brother, and bringeth them up into a high mountain apart: and He was transfigured before them. And His face did shine as the sun, and His garments became white as snow. And behold there appeared to them Moses and Elias talking with Him. Then Peter answering said to Jesus: Lord, it is good for us to be here: if Thou wilt, let us make here three tabernacles, one for Thee, and one for Moses, and one for Elias. And as he was yet speaking, behold a bright cloud overshadowed them. And lo, a voice out of the cloud, saying: This is my beloved Son, in whom I am well pleased: hear ye Him. And the disciples hearing, fell upon their face and were very much afraid. And Jesus came and touched them, and said to them: Arise, and fear not. And they, lifting up their eyes, saw no one, but only Jesus. And as they came down from the mountain, Jesus charged them, saying: Tell the vision to no man till the Son of Man be risen from the dead.