Preach the word; be prepared in season and out of season; correct, rebuke and encourage—with great patience and careful instruction.
(2 Timothy 4:2)

Be prepared....this applies to scripture as well as any aspect of our lives.  If we are prepared, we increase our odds for success in every endeavor.  Preparation is key when speaking God's Word.  The Holy Spirit will help guide our words, but it is still up to us to prepare by reading and studying the Bible.  Although this preparation takes a little discipline, the rewards are priceless.