Proverb 20:27 The spirit of man is the candle of the Lord, searching all the inward parts of the belly.

Truth is revealed literally, allegorically or metaphorically. I do not care how this shall happen as long as truth is revealed. In the literal sense, you have the word candle which is a picture of the spirit of man. What picture is in your mind? A candle wick and wax, shaped like a stick, tapered, to be set on a stand? I would agree that this is the first and most familiar image one has of a candle. I would remind you that the candle of the time of this writing in proverbs was not of that design. It was a lamp.

This lamp was of a design to hold oil, which was the source of illumination. It was not illumination, only the fuel for the fire. The oil was not and is not a part of the lamp design. You can have a lamp without oil. This is verified in scripture in the telling of with wide virgins.

Matthew 25:3 They that were foolish took their lamps, and took no oil with them:

They were instructed to go and purchase oil for their lamps. So the oil is placed in the vessel and is not a part of the original design but had a place in the function of the lamp. The lamp was designed to contain the oil, but the oil is not the lamp.

Exodus 31:3 And I have filled him with the spirit of God, in wisdom, and in understanding, and in knowledge, and in all manner of workmanship,

The oil is a representation of the spirit of God, the Holy Spirit. This lamp oil is the Holy Spirit. Spirit is of God, we are but a vessel, but there is one thing missing, ignition. Can a lamp with oil lite itself? No.

Psalm 119:154 Plead my cause, and deliver me: quicken me according to thy word.

John 6:63 It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.

The Word is the ignition source. No lamp is lite without it.