Acts 3:22 For Moses truly said unto the fathers, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear in all things whatsoever he shall say unto you.
Peter preaches that Moses, in Deuteronomy 18, prophesied that the Lord will raise up from Israel a Prophet like Moses. That prophecy has been fulfilled today in the person of Jesus of Nazareth, the promised Messiah whom you crucified.
A prophet is a believer who has been anointed by God to speak His words to the people. Jesus has been anointed with the Holy Spirit to do just that. and He did. The words that Jesus spoke are Spirit and they are Truth.
In this prophecy about the Anointed One, the Messiah, the Christ, is embedded a command and a promise: Him shall ye hear. When Jesus was transfigured before the disciples, and they saw what He really looked like, a voice said, ”This is my Son: hear ye him!” It is also a promise for us: You will hear Him in all things. ”Hear” means: listen with faith, receive Him, believe Him, desire to obey, be ready to be changed, and commit to follow Him no matter what. You will hear, you will be changed. That’s a promise. You will become like Mary, who chose the ”one thing needful” for a full life. She sat at Jesus’ feet and listened to Jesus. When you listen to this Prophet it will change your life for the better.