You are hereUCG.org / Sermons / Speaking in Tongues: Proof of True Christianity? Speaking in Tongues Proof of True Christianity? Given on May 16, 2015 by Martin Braun Listen Downloads MP3 Audio (4.01 MB) Downloads Speaking in Tongues: Proof of True Christianity? MP3 Audio (4.01 MB) × Some teach that speaking in tongues is proof of "true Christianity", let's examine this teaching to see if that is true.