18And Jesus came and said to them, "All authority in heaven and on earth has been given to me. 19Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age."
Matthew 28:18-20 (ESV)
37Now when they heard this they were cut to the heart, and said to Peter and the rest of the apostles, "Brothers, what shall we do?" 38And Peter said to them, "Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit. 39For the promise is for you and for your children and for all who are far off, everyone whom the Lord our God calls to himself." 40And with many other words he bore witness and continued to exhort them, saying, "Save yourselves from this crooked generation." 41So those who received his word were baptized, and there were added that day about three thousand souls. 42And they devoted themselves to the apostles' teaching and the fellowship, to the breaking of bread and the prayers.43And awe came upon every soul, and many wonders and signs were being done through the apostles. 44And all who believed were together and had all things in common.