'Legitimate' in the Bible

And Cyrus, king of Persia, had Mithredath the treasurer bring them out, and he counted them out to Sheshbazzar, the governor (leader) of Judah.

In Christ Jesus, then, I have found [legitimate] reason for boasting in things related [to my service] to God.

All things are lawful [that is, morally legitimate, permissible], but not all things are beneficial or advantageous. All things are lawful, but not all things are constructive [to character] and edifying [to spiritual life].

We, on the other hand, will not boast beyond our proper limit, but [will keep] within the limits of our commission (territory, authority) which God has granted to us as a measure, which reaches and includes even you.

We are not overstepping the limits of our province, as if we did not [legitimately] reach to you, for we were the [very] first to come even as far as you with the good news of Christ.