Well I say “This Is It” when the time is near or even at any moment for Jesus’ return. With these Christian rock lyrics by Jonah 33, one of the Christian rock bands, God is telling the whole world that this is it when He decided to end the world. Are you ready if that does happens? With these Christian rock lyrics, we all need to be ready where only God knows the time of day. Jesus doesn’t know when till God says so. Here on earth we usually say ‘this is it’ when the time has come when we waited so long for a particular event to happen like wedding, off to college/university or anything. All I can say is there is no other way to get to Heaven only by Jesus.