In the midst of fear, doubt and confusion, human testimony can shake off every doubt and stir up hope and faith in the hearts of believers. The Bible says we overcome the Devil by the blood of the Lamb and the word of our testimonies. In the middle of a relentless storm and persecution only those that walk in the Spirit of God daily get the courage to overlook the trouble and press on. New converts can easily be swayed from the Gospel if consistent testimonies of answered prayers are not being offered in their midst to strengthen and encourage them.
Witnesses also serve as testimonials to strenghthen and encourage. Jesus being the "faithful witness" means that no matter how difficult life here on earth becomes, we have a dependable witness who has promised to never leave us nor forsake us. As the firstborn from the dead, He is the first One to rise from the dead to die no more, and the one who holds the place of honor and pre-eminence among all who are raised from the dead to enjoy eternal life. As a faithful witness, Jesus is also the ruler over all earthly kings. We are greatly encouraged to know that even as our head and master, every evil thing done to us was first done to him.