....in the teaching uncorruptedness, gravity.... (Tit 2:7-8)

"... in the teaching uncorruptedness, gravity, incorruptibility, discourse sound, irreprehensible..." (Tit 2:7-8 YLT)

There are few rules of teaching:
(1) Don't air opinions; speak the truth alone
(2) Don't entertain with unedifying jokes; speak reverently out of passion for God
(3) Don't skip the important elements (redeem time properly); teach everything needed to protect the doctrine from corruption and make it stand out -- each munch is just a little munch, of course, but it must be wholesome
(4) Don't speak disconnectedly and illogically; speak clearly, cogently, and convincingly
(5) Don't use words, illustrations, or gestures that would violate the spirit of edifying speech; speak in a way that glorifies God