Mumbling is not all these religions have in common. Have you noticed that the real devotees share the violent rocking back and forth as they read from their instruction books? They share that back and forth motion with the mentally ill too!
And Jews and Muslims love to perform acts of genital mutilation on babies, whilst both having an irrational hatred of pigs.
All three have irrational periods of fasting in their rules, ranging from the easy-peasy token giving up of a single item, through to starving and removing access to drinking water. Harsh.
All three religions have been behind some of the planets worst human on human hatred, cruelty and destruction.
All three religions are really different shades of evil.