Prayers, Creeds, etc.

Christian prayers, creeds, and terms of special importance are usually capitalized. Parables and miracles are usually lowercased. Here is how they should appear in Chicago Style, the Decalogue; the Ten Commandments; the first commandment.

Is commandment a proper noun?

something that must be obeyed; a command or edict.

Thus, here are 10 capitalization rules you should know for a well written write-up:
Capitalize the first word of every sentence.“I” is always capitalized, along with all its contractions. Capitalize the first word of a quoted sentence. Capitalize a proper noun. Capitalize a person’s title when it precedes the name.

DOES ITS have to be capitalized?

Words such as one, it, its, it’s, him, and own should all be capitalized no matter where they appear in a title.

Chicago style citation

DeMille, Cecil B. 1956. The Ten Commandments. United States: Paramount Pictures.