Those who are called to speak the word of God, whether in public or in small groups, must learn to have quiet hours of contemplation. They must know how to be alone with God before they can go out to speak.
Those who can’t find the time to converse with God in private are not fit to speak about Him in public. For what would they say unless it is given to them by God? And how are they to receive from God if they don’t have the time to quietly wait before Him?
Do not be so eager to go out there and teach when you have not taken the time to fortify your life with the right teachings that truly strengthen the soul. What would you do when you run out of meaningful things to say? Will you invent stories or just wing it, hoping that the Holy Spirit will buffer your foolishness?
Do your best to present yourself to God as one approved, a workman who does not need to be ashamed and who correctly handles the word of truth (2 Timothy 2:15).