The object of this game is to be in possession of the greatest amount of Heavenly Gain when the word "FIRE" is shouted. As the player improves his position, he may "trans-mint" his Earthly Barter, "Wood, Hay and Stubble", which burns up completely when "FIRE" is announced, into Heavenly Gain, "Gold, Silver and Precious Stones", which is imperishable.
(quoted from the introduction to the rules)
Players dig through a pile of alphabet tiles to spell out short answers to Bible-related questions, e.g. an acceptable answer to "A person who turned into a Pillar of Salt" would be MRS. LOT. If you get an "Upon the Foundation" card, you have to spell out a word of "some specific meaning and significance in connection with the Foundation provided for our Salvation", e.g. BLOOD, DEATH, or CROSS.