Romans 13:9

Thou shalt not commit adultery, etc. Omit thou shalt not bear false witness. The seventh commandment precedes the sixth, as in Mark 10:19; Luke 18:20; James 2:11.

It is briefly comprehended [α ν α κ ε φ α λ α ι ο υ τ α ι]. Only here and Ephesians 1:10. Rev., it is summed up. Ana has the force of again in the sense of recapitulation. Compare Leviticus 19:18. The law is normally a unit in which there is no real separation between the commandments. "Summed up in one word." The verb is compounded, not with kefalh head, but with its derivative kefalaion the main point.

Namely thou shalt love, etc. [ε ν τ ω α γ α π η σ ε ι ς]. The Greek idiom is, it is summed up in the thou shalt love, the whole commandment being taken as a substantive with the definite article.

Neighbor [τ ο ν π λ η σ ι ο ν]. See on Matthew 6:43.