Printed from the Blue Letter Bible
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. For the promise is unto you, and to your children, and to all that are afar off, [even] as many as the Lord our God shall call.
Peter talks about the gift of the Holy Spirit which is received after repentance. He then declares this gift to be a promise and that it will remain for all generations. The gift of the Holy Spirit was given to the church on the day of Pentecost and it is still being given to Christians of today's generation. God will not revoke this promise nor refrain from giving it to those that He calls His own.