[ealgeone]

How can “context” demand an addition the author did not see fit to include?

You mean like this?

“But I say to you, whoever divorces his wife (unless the marriage is unlawful) causes her to commit adultery, and whoever marries a divorced woman commits adultery”

New American Bible (Washington, DC Revised Edition 2011) Mt 5:32

[papertyger]

Apples and oranges.
Where did Luther’s teaching authority come from?