And when they bring you unto the synagogues, and unto magistrates, and powers, take ye no thought how or what thing ye shall answer, or what ye shall say: For the Holy Ghost shall teach you in the same hour what ye ought to say. (Luke 12:11-12)

The Holy Spirit acts to his people somewhat as a prompter to a reciter. A man has to deliver a piece which he has learned; but his memory is treacherous, and therefore somewhere out of sight there is a prompter, so that when the speaker is at a loss and might use a wrong word, a whisper is heard, which suggests the right one.

When the speaker has almost lost the thread of his discourse he turns his ear, and the prompter gives him the catch-word and aids his memory.

If I may be allowed the simile, I would say that this represents in part the work of the Spirit of God in us,—suggesting to us the right desire, and bringing all things to our remembrance whatsoever Christ has told us.

In prayer we should often come to a dead stand, but he incites, suggests, and inspires, and so we go onward. In prayer we might grow weary, but the Comforter encourages and refreshes us with cheering thoughts.

When, indeed, we are in our bewilderment almost driven to give up prayer, the whisper of his love drops a live coal from off the altar into our soul, and our hearts glow with greater ardour than before. Regard the Holy Spirit as your prompter, and let your ear be opened to his voice. ((Charles SpurgeonAt the Master’s Feet [Grand Rapids: Zondervan, 2005], June 3.))

Charles Spurgeon

Further reading