A YouTube video by Jasmin Rappleye examines Latter-day Saint teaching about using handshakes to test whether a spiritual being is an angel or a demon. The video has drawn 33,687 views in 39 hours.

Rappleye notes that according to some scholars, the type of handclasp matters in the test. The teaching appears in Doctrine and Covenants 129 and connects to temple ordinances. Most Christian denominations believe in angels and demons but don't have a systematized test for differentiating them.