...That is where all the religious channels came from.
They probably came from Matthew 28:19-20.
To the point of the thread, socantra is right in that if there is a particular outlet you want to see on Roku that's not already there, contact them and request that they provide content through the little streaming box.
Roku 3, Roku HDMI Streaming Stick
Apple TV (4th gen), TiVo, FireTV Stick, Chromecast
Roku LT, Roku 1, Roku 2 XS, Roku 2 XD, Roku 2 HD, Roku XDS, Roku XD, Roku HD
Apple TV (2nd, 3rd gen), Simple.TV/OTA, FireTV