The Comma (,)
Commas are used to separate items in a series (a group of three or more words, phrases, or clauses listed in succession). A comma is placed after every item in the series except the final one. Each item may be a single word or a group of words. Examples: "God is eternal, powerful, intelligent, and personal." "Jesus healed sick people, drove out evil spirits, calmed a storm, walked on water, and raised people from death."
The Colon (:)
A colon suggests a break more complete than a semicolon but less complete than a period. A colon is used to introduce a word, a list, or a sentence. It suggests that more information is about to follow. Example: "So this is what I tell people: 'He is the Son of God.'"
The Semicolon (;)
A semicolon is used within a sentence to indicate a pause stronger than a comma but weaker than a period. It is used to separate independent clauses that are closely related but not joined by a conjunction. Example: "Have nothing to do with that man; he is not guilty."