To see the phrase on a Redeemer Rocket, get one, fire the rocket, and enable the playersonly. This will freeze the rocket. Walk up to the rocket and you can read the phrase "Swallow This!" on it. You do not have to worry about getting too close to it. Since the Redeemer Rocket is something that you fired, it cannot harm you while airborne, unless it hits a wall or person close to you.