God's grace builds the church; at times He even uses persecution. Making disciples results in unity, which is noticed by the world. Suggested Scriptures for further study: Matthew 5:11-12, 1 Peter…
Peter and Cornelius both have visions. They have a Holy Spirit led meeting and Peter realizes that the Gospel is for ALL nations, not just the Hebrews.
What is a witness? Why don't we witness?
Why was Saul so angry? What do you need to DO to be right with God?