Preaching what the text of scripture says.
Precise and passionate of what the preacher says.
2 Timothy 2:15 says; "Be diligent to present yourself approved to God, a worker who does not need to be ashamed, rightly dividing the word of truth."
2 Timothy 4:2 says; "Preach the word! Be ready in season and out of season. Convince, rebuke, exhort, with all longsuffering and teaching."