Apocalypse Revealed #144
144. "'I will put upon you no other burden.'" This symbolically means, only let them guard themselves against those people.
The reason is that those people support their falsities with reasonings issuing from their natural self, and with some statements from the Word which they falsify. For these enable them to lead others astray. They are like snakes in the shrubbery that bite passers-by, or hidden poisons that kill the unaware.