But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth.” – Acts 1:8 NIV
Was Jesus instruction to be his witnesses given solely to those who were gathered with him at the time, or is it broader than that? It was given specifically to those who were eyewitnesses of what he had taught and done. Their witness was critical to the early spread of Christianity. But while I am not an eyewitness of his life 2000 years ago, I can and should bear witness of what he has done in my life. Being a witness is not optional for a follower of Jesus.