2.1. In keeping with standard English-language practices, we capitalize proper nouns (e.g., Synoptic Gospels).

Do I capitalize Gospels?

capitalize Gospel when you refer to a specific book of the Bible (the Gospel of Mark) or to the four-book division of the New Testament (the Gospels) lowercase gospel in general references to the Christian message.

Why is John's Gospel not synoptic?

The reason that John is not part of the Synoptic Gospels is that it's written in a different manner than the first three and might have been written...