Oil denotes faith. And the foolish said unto the wise, Give us of
your oil; for our lamps are gone out. Matthew 25:8.
Lamp denotes Word of God. Thy word is a lamp unto my feet, and a light unto my path.Psalm119:105.
Light denotes “Present Truth,” Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into. 1 Peter 1:12."
Joseph Bates