Acts 2:14, 36-38

But Peter, standing up with the eleven, lifted up his voice, and said unto them, Ye men of Judæa, and all ye that dwell at Jerusalem, be this known unto you, and hearken to my words

Therefore let all the house of Israel know assuredly, that God hath made that same Jesus, whom ye have crucified, both Lord and Christ. Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do? Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.