Thanks to Vee at Living Journey for sharing the following link to
"They Know I Am A Christian" by Mark Cahill at Mark Cahill Ministries
When Jesus told us to go into all the world and preach the Gospel to every creature, He meant that. Tell them the truth about Jesus Christ.Early Christians died for proclaiming their faith. They were not martyred for living lives of kindness and service (which was a fruit of their faith); they died for telling people that they must repent and believe on the Lord Jesus Christ. They took Jesus seriously just as Peter said in Acts 10:42,43 (NIV), "He commanded us to preach to the people and to testify that He is the One whom God appointed as judge of the living and the dead. All the prophets testify about Him that everyone who believes in Him receives forgiveness of sins through His Name." The results of Peter's proclamation were immediate. Acts 10:44 (NIV) says, "While Peter was still speaking these words, the Holy Spirit came on all who heard the message." The people that Peter was speaking to did not respond because of acts of kindness; they responded to the words that were spoken. Lost people need to hear the truth of the Gospel. We need to speak the word with boldness which is the ultimate act of kindness to a lost and dying world.
When Romans says faith comes by hearing and hearing by the word of God, that means someone heard or read the word of God.
When Philip witnessed to the Ethiopian eunuch, he did it with his mouth and not his actions.
When Jesus witnessed to the woman at the well, it was a verbal conversation. You never see Him getting the water for that woman.