I really appreciate these words from John Piper on the traits a Bible teacher should have.
Flattery is dangerous, especially when aimed at ministers, and Daniel Darling explains why.
In this post on Trevin Wax’s blog, he has a lot of great information and links about Sunday School. I haven’t had the chance to look through each link, but this seems to be a very helpful compilation of resources.
The hardening work of God isn’t an easy subject to broach initially, but Justin Taylor provides sound guidance on it.