I have revealed and saved and proclaimed– I, and not some foreign god among you. You are my witnesses,” declares the LORD, “that I am God. Isaiah 43:12 NIV
In Acts 1:8 Jesus tells us, “You will be my witnesses.” But what does he mean? Sometimes we think that to be a witness is to try to persuade someone to become a Christian. But Jesus is quoting Isaiah 43, which is a court case between God and the idols. There Isaiah was saying that God was going to use his people’s lives as evidence that he is God. When he delivered his people from Babylonian captivity, just as he had predicted he would, their lives would be evidence that he alone is God.
God wants to be able to put you and me on the witness stand at any moment and say to the world, “There is my evidence that I am God.” Jesus was saying “You are my witnesses, you are my evidence that I am the Savior of the world, that God can take the broken and put it back together, that God can take the rotten and make it pure, that God can take the captive and set it free; you’re the living evidence. The only way the world will ever know how great and glorious and saving I am is if they see the evidence in your lives.”
Think of that; God can do something in your life and mine that will make us such that he can point to us at any moment and say, “There’s my evidence.” That’s what it means to be a witness.