1st Sunday of Advent
First Reading: Isaiah 63:16-17,64:1,3-8
You, O LORD, are our father; our Redeemer from of old is your name. Why, O LORD, do you make us stray from your ways and harden our heart, so that we do not fear you? Turn back for the sake of your servants, for the sake of the tribes that are your heritage. O that you would tear open the heavens and come down, so that the mountains would quake at your presence, you came down, the mountains quaked at your presence. From ages past no one has heard, no ear has perceived, no eye has seen any God besides you, who works for those who wait for him. You meet those who gladly do right, those who remember you in your ways. But you were angry, and we sinned; because you hid yourself we transgressed. We have all become like one who is unclean, and all our righteous deeds are like a filthy cloth. We all fade like a leaf, and our iniquities, like the wind, take us away. There is no one who calls on your name, or attempts to take hold of you; for you have hidden your face from us, and have delivered us into the hand of our iniquity. Yet, O LORD, you are our Father; we are the clay, and you are our potter; we are all the work of your hand.
Second Reading: 1 Corinthians 1:3-9
Brothers and sisters, grace to you and peace from God our Father and the Lord Jesus Christ. I give thanks to my God always for you because of the grace of God that has been given you in Christ Jesus, for in every way you have been enriched in him, in speech and knowledge of every kind-- just as the testimony of Christ has been strengthened among you-- so that you are not lacking in any spiritual gift as you wait for the revealing of our Lord Jesus Christ. He will also strengthen you to the end, so that you may be blameless on the day of our Lord Jesus Christ. God is faithful; by him you were called into the fellowship of his Son, Jesus Christ our Lord.
Gospel Reading: Mark 13:33-37
On those days, Jesus told his disciples about the coming of Son of Man: "Beware, keep alert; for you do not know when the time will come. It is like a man going on a journey, when he leaves home and puts his slaves in charge, each with his work, and commands the doorkeeper to be on the watch. Therefore, keep awake--for you do not know when the master of the house will come, in the evening, or at midnight, or at cockcrow, or at dawn, or else he may find you asleep when he comes suddenly. And what I say to you I say to all: Keep awake."