DR Squared: Memorial Of Saint Leo The Great, Pope And Doctor Of The Church

First Reading:  Sirach 39:6-11

He will give his heart to resort early to the Lord that made him, and he will pray in the sight of the most High. He will open his mouth in prayer, and will make supplication for his sins. For if it shall please the great Lord, he will fill him with the spirit of understanding:  And he will pour forth the words of his wisdom as showers, and in his prayer he will confess to the Lord. And he shall direct his counsel, and his knowledge, and in his secrets shall he meditate. He shall shew forth the discipline he hath learned, and shall glory in the law of the covenant of the Lord.

Responsorial Psalm:  Psalm 37 (36):30a; V. 3-4, 5-6, 30-31

R.  The mouth of the just shall meditate wisdom:

V.  Trust in the Lord, and do good, and dwell in the land,

     and thou shalt be fed with its riches.

     Delight in the Lord,

     and he will give thee the requests of thy heart.

V.  Commit thy way to the Lord, and trust in him,

     and he will do it.

     And he will bring forth thy justice as the light,

     and thy judgment as the noonday.

V.  The mouth of the just shall meditate wisdom:

     and his tongue shall speak judgment.

     The law of his God is in his heart,

     and his steps shall not be supplanted.

Gospel Reading:  Matthew 16:13-19

And Jesus came into the quarters of Caesarea Philippi: and he asked his disciples, saying: Whom do men say that the Son of man is? But they said: Some John the Baptist, and other some Elias, and others Jeremias, or one of the prophets. Jesus saith to them: But whom do you say that I am? Simon Peter answered and said: Thou art Christ, the Son of the living God. And Jesus answering, said to him: Blessed art thou, Simon Bar-Jona: because flesh and blood hath not revealed it to thee, but my Father who is in heaven. And I say to thee: That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it. And I will give to thee the keys of the kingdom of heaven. And whatsoever thou shalt bind upon earth, it shall be bound also in heaven: and whatsoever thou shalt loose upon earth, it shall be loosed also in heaven.

The readings from the USCCB can be found here.