Acts 8: 5-8. 14-17
People who hear the aspostles preach welcome the message of Christ, and receive the Holy Spirit through the laying on of hands. 

1 Peter 3: 15-18
People will hear and recognise the Gospel of Christ through actions as well as words. 

John 14: 15-21
We are not alone, or abandoned; the Spirit will be with us, to comfort, advise and protect us.