some verses

James 3:1
Not many of you should become teachers, my brothers, for you know that we who teach will be judged with greater strictness.

Hebrews 2:1
Therefore we must pay much closer attention to what we have heard, lest we drift away from it.

Luke 12:48b
Everyone to whom much was given, of him much will be required, and from him to whom they entrusted much, they will demand the more.

James 4:17
So whoever knows the right thing to do and fails to do it, for him it is sin.