First ReadingIsaiah 22:19-23

I will thrust you from your office, and you will be cast down from your station. In that day I will call my servant Eli′akim the son of Hilki′ah, and I will clothe him with your robe, and will bind your belt on him, and will commit your authority to his hand; and he shall be a father to the inhabitants of Jerusalem and to the house of Judah. And I will place on his shoulder the key of the house of David; he shall open, and none shall shut; and he shall shut, and none shall open. And I will fasten him like a peg in a sure place, and he will become a throne of honor to his father’s house. 

Responsorial PsalmPsalm 138:1-2, 2-3, 6, 8

℟Lord, your love is eternal; do not forsake the work of your hands.

I give you thanks, O Lord, with my whole heart; before the angels I sing your praise;

I bow down toward your holy temple and give thanks to your name for your mercy and your faithfulness;

℟Lord, your love is eternal; do not forsake the work of your hands.

for you have exalted above everything your name and your word.

On the day I called, you answered me, my strength of soul you increased. 

℟Lord, your love is eternal; do not forsake the work of your hands.

For though the Lord is high, he regards the lowly; but the haughty he knows from afar.

℟Lord, your love is eternal; do not forsake the work of your hands.

The Lord will fulfil his purpose for me; your mercy, O Lord, endures for ever. Do not forsake the work of your hands.

℟Lord, your love is eternal; do not forsake the work of your hands.

Second ReadingRomans 11:33-36

O the depth of the riches and wisdom and knowledge of God! How unsearchable are his judgments and how inscrutable his ways! “For who has known the mind of the Lord, or who has been his counselor?” “Or who has given a gift to him that he might be repaid?” For from him and through him and to him are all things. To him be glory for ever. Amen.

AlleluiaMatthew 16:18

℟Alleluia!

And I tell you, you are Peter, s and on this rock I will build my Church, and the gates of Hades shall not prevail against it. 

℟Alleluia!

GospelMatthew 16:13-20

Now when Jesus came into the district of Caesare′a Philip′pi, he asked his disciples, “Who do men say that the Son of man is?” And they said, “Some say John the Baptist, others say Eli′jah, and others Jeremiah or one of the prophets.” He said to them, “But who do you say that I am?” Simon Peter replied, “You are the Christ, the

Son of the living God.” And Jesus answered him, “Blessed are you, Simon Bar­ Jona! For flesh and blood has not revealed this to you, but my Father who is in heaven. And I tell you, you are Peter, and on this rock I will build my Church, and the gates of Hades shall not prevail against it. I will give you the keys of the kingdom of heaven, and whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.” Then he strictly charged the disciples to tell no one that he was the Christ.