You may order the Bengali correspondence courses from Child Evangelism Fellowship in Los Angeles.
Child Evangelism Fellowship in Los Angeles
Emmaus India https://emmausindia.in
If you want to see if there is a Source of Light Bible Correspondence Course ministry in your country and in your language, please go to this website link and search.
SIM - Serving in Mission
Bangladesh Bible Correspondence School
If you have any questions or need help finding a particular video, tract, book or any other Christian resource in any language of the world, please contact email@example.com