The preacher:

Speak words that become sound doctrine (Titus 2:1

Speak so as to be understood (I Corinthians 14:19

Speak the truth in love (Ephesians 4:15

Speak with all authority (Titus 2:15

The listener:

Take heed what you hear (Mark 8:24

Take heed how you hear (Luke 8:18

Be sure the word is mixed with faith (Hebrews 4:2

Put the word to use in your life (James 1:22-25

Control your thinking - do not let your mind wander (Nehemiah 8:3

Uphold, do not apologize for the truth that was taught. (Acts 18:24-26