We are called to testify as witnesses. Witnesses do not know all the facts or have the complete picture. That is why God insisted there always be more than one witness. A witness has only a small bit of the giant puzzle to contribute. But every piece brought to the table and humbly surrendered to be interlocked in unity with all the other witnesses create a compelling and more accurate portrait of God to a skeptical world.
A witness testifies to his own experience and perspective. It is unique and different from anyone else but not antagonistic if it is truthful. If instead of exercising ourselves trying to force our perspective and understanding on everyone else, we simply presented what God has been, and is now to us, we would see God's power and beauty emerge in a glorious way.