Why do some verse cites include letters, e.g., [7b] ?
Chapter and verse numbers are based on the original Hebrew and Greek texts. In some cases, a single verse may contain two or more sentences. When quoting an excerpt, only part of the verse may be relevant to a commentator’s point. Alternatively, the first or last part of the verse may continue from or to another verse. The first sentence of a verse is considered to be [a], the second [b], etc. For instance, James 4:7b says “Resist the devil, and he will flee from you.” It is the part of the verse that talks about the devil.