2024-02-16 00:00:00 JW Library Sign Language is an official app of Jehovah’s Witnesses. It downloads, organizes, and plays sign-language videos from jw.org. Watch the Bible and other video publications in sign language. Download them to your mobile device so that you can watch them when you are not connected to the Internet. Enjoy the colorful images, simple navigation, and easy-to-use controls.