Only Eucharist should be capitalized, all others should not be.
Never. You do not capitalize baptism. The other sacraments are not capitalized with the exception of the word Eucharist; but its adjective form, eucharistic, is not capitalized.
It is capitalized at the beginning of the sentence or when it forms part of the proper noun. Example: Catholic Sacraments
The word 'will' should be capitalized only when it is a person's name or the first word in a sentence. As a verb or common noun, it should not be capitalized.
Yes, Sunday should always be capitalized.
The second word should not be capitalized
As an abbreviation it should be capitalized.
No, the word "smartphone" should not be capitalized unless it is at the beginning of a sentence.
No, the word "epitaph" should not be capitalized unless it is at the beginning of a sentence or part of a title.
The word "banker" should not be capitalized unless it is at the beginning of a sentence or part of a title.
Yes, Greek should be capitalized.
Yes it should be capitalized.