A casket in a dream signifies your essence, soul, spiritual life, your secret thoughts, by which you are guided, accomplishing your actions on earth. If in a dream you see an empty casket, it means that you have committed a terrible sin, so the god can turn away from you if you do not redeem and do not piss his offense. If the casket is filled, then you often think about the soul and take care of it, and you are rewarded for it. A dream in which you see a casket filled with ash or ash, says that you have a black in your soul and you do not see a gleam. But there is a gap - and this is the name and the work of Christ.