Wedding - Dreaming about getting married or being in a wedding is relatively common. If your biological time clock is ticking away and you are anxious to get married, this dream may be a form of wish-fulfillment. However, a wedding or a marriage in a dream is a profound and very personal symbol. It usually represents the harmonious integration of your personality or psyche (i.e. the coming together of masculine and feminine, physical and spiritual, subconscious and conscious components). The marriage in your dream may represent the union of the different sides of your own character. This is a positive dream symbol because it suggests a degree of self-awareness and integration. Many people dream about weddings during times of stress and difficulty.

Church - a place of security, safety, and peace. It could represent a need for greater spirituality in the dreamer's life. It may express religious beliefs, everyday occurrences, issues of safety, security and strength through community, religious, or self expression.
 It could also be a symbol of your own 'higher self'.. representing a sign of your growing maturity and inner faith....not just of a 'higher power' but also the faith in the inner self.

Running Away - suggests something, or someone, in your life is difficult to face, and that you would rather run away from it than face it.

Grandmother - A symbol of knowledge and wisdom, as well as security, protection, nurturance, and unconditional love. Consider the qualities and characteristics that exist in your own grandmother.

Dying - The message may be that your old self needs to be left behind. This may mean that you must stop carrying around with you the crippling burden of your past (irrational, or guilty feelings and martyrdom complex, or any other negative emotions) and, instead, you must open yourself to what the present moment is offering. Alternatively, the "old self" may be old attachments, habits, ambitions, values, or goals... in which case the dream is telling you that the only way forward for you lies through giving these up and looking deeper within yourself for better values, etc.

Casket - indicates that it is time to end a painful memory, hurtful situation or relationship. Additionally, it symbolizes a completion of a project or lifestyle and a beginning of another. In this regards, this symbol may represent new opportunities.

White - White is a feminine color. Symbolizing virginity, purity, well earned success, honesty, virtue, innocence, peace, happiness, joy, transformation, cleanliness, dignity, awareness, clarity of mind, hope, and light feelings, but also emotional coldness and immaturity.
White in a dream might possibly be a reminder to resolve special situations and problems.

Despicable old man - represents the past, and the pain and sorrow it contains. Because he was laughing at you, it suggests that the pain from the past has been 'taunting' you and has been keeping you from moving on.

I hope this helped you, even a little. Light & Love,
J