Holy Gospel: Matthew 16:13-19 (ESV)
Now when Jesus came into the district of Caesarea Philippi, he asked his disciples, “Who do people say that the Son of Man is?” 14 And they said, “Some say John the Baptist, others say Elijah, and others Jeremiah or one of the prophets.” 15 He said to them, “But who do you say that I am?” 16 Simon Peter replied, “You are the Christ, the Son of the living God.” 17 And Jesus answered him, “Blessed are you, Simon Bar-Jonah! For flesh and blood has not revealed this to you, but my Father who is in heaven. 18 And I tell you, you are Peter, and on this rock I will build my church, and the gates of hell shall not prevail against it. 19 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.
Old Testament Reading: Acts 15:1–12 (ESV)
1 But some men came down from Judea and were teaching the brothers, "Unless you are circumcised according to the custom of Moses, you cannot be saved." 2 And after Paul and Barnabus had no small dissension and debate with them, Paul and Barnabus and some of the others were appointed to go up to Jerusalem to the apostles and the elders about this question. 3 So, being sent on their way by the church, they passed through both Phoenicia and Samaria, describing in detail the conversion of the Gentiles, and brought great joy to all the brothers. 4 When they came to Jerusalem, they were welcomed by the church and the apostles and the elders, and they declared all that God had done with them. 5 But some believers who belonged to the party of the Pharisees rose up and said, "It is necessary to circumcise them and to order them to keep the law of Moses."
6 The apostles and the elders were gathered together to consider this matter.
7 And after there had been much debate, Peter stood up and said to them, "Brothers, you know that in the early days God made a choice among you, that by my mouth the Gentiles should hear the word of the gospel and believe. 8 And God, who knows the heart, bore witness to them, by giving them the Holy Spirit just as he did to us, 9 and he made no distinction between us and them, having cleansed their hearts by faith. 10 Now, therefore, who are you putting God to the test by placing a yoke on the neck of the disciples that neither our fathers nor we have been able to bear? 11 But we believe that we will be saved through the grace of the Lord Jesus, just as they will."
12 And all the assembly fell silent, and they listened to Barnabus and Paul as they related what signs and wonders God had done through them among the Gentiles.
Epistle: : Galatians 2:1-10 (ESV)
Then after fourteen years I went up again to Jerusalem with Barnabas, taking Titus along with me. 2 I went up because of a revelation and set before them (though privately before those who seemed influential) the gospel that I proclaim among the Gentiles, in order to make sure I was not running or had not run in vain. 3 But even Titus, who was with me, was not forced to be circumcised, though he was a Greek. 4 Yet because of false brothers secretly brought in—who slipped in to spy out our freedom that we have in Christ Jesus, so that they might bring us into slavery— 5 to them we did not yield in submission even for a moment, so that the truth of the gospel might be preserved for you. 6 And from those who seemed to be influential (what they were makes no difference to me; God shows no partiality)—those, I say, who seemed influential added nothing to me. 7 On the contrary, when they saw that I had been entrusted with the gospel to the uncircumcised, just as Peter had been entrusted with the gospel to the circumcised 8 (for he who worked through Peter for his apostolic ministry to the circumcised worked also through me for mine to the Gentiles), 9 and when James and Cephas and John, who seemed to be pillars, perceived the grace that was given to me, they gave the right hand of fellowship to Barnabas and me, that we should go to the Gentiles and they to the circumcised. 10 Only, they asked us to remember the poor, the very thing I was eager to do.
The festival of St. Peter and St. Paul is probably the oldest of the saints' observances (dating from about the middle of the third century). An early tradition held that these two pillars of the New Testament were martyred on the same day in Rome during the persecution under Nero. In addition to this joint commemoration of their deaths, both apostles are commemorated separately: Peter on January 18 for his confession of Jesus as the Christ (Matthew 16:13-16) and Paul on January 25 for his conversion (Acts 9:1-19). The NewTestament tells us much about both apostles. Peter was with Jesus from the beginning of His ministry and served as a leader among the disciples. Despite his steadfast faith, Scripture also records some of his failures, such as his rebuke of Jesus (Matthew 26:69-75). Following Jesus' ascension, Peter continued as a leader in the Church (Acts 1:15; 2:14; 15:7). Paul, a devout Jew also known as Saul, entered the scene as a persecutor of the Church. Following his miraculous conversion, in which the risen Christ Himself appeared to him, Paul became a powerful preacher of the grace of God. During his three missionary journeys (Acts 13-14; 16-18; 18-21), Paul traveled throughout modern-day Turkey and Greece. The New Testament account of his life ends with Paul under house arrest in Rome (Acts 28:16), though tradition holds that he went on to Spain before returning to Rome. (From The Treasury of daily Prayer)