Hebrews 13:23

our brother Timothy--So Paul, Co1 4:17; Co2 1:1; Col 1:1; Th1 3:2. is set at liberty--from prison. So Aristarchus was imprisoned with Paul. BIRKS translates, "dismissed," "sent away," namely, on a mission to Greece, as Paul promised (Phi 2:19). However, some kind of previous detention is implied before his being let go to Philippi. Paul, though now at large, was still in Italy, whence he sends the salutations of Italian Christians (Heb 13:24), waiting for Timothy to join him, so as to start for Jerusalem: we know from Ti1 1:3, he and Timothy were together at Ephesus after his departing from Italy eastward. He probably left Timothy there and went to Philippi as he had promised. Paul implies that if Timothy shall not come shortly, he will start on his journey to the Hebrews at once.

The apostle, having treated largely of Christ, and faith, and free grace, and gospel privileges, and warned the Hebrews against apostasy, now, in the close of all, recommends several excellent duties to them, as the proper fruits of faith (v. 1-17); he then bespeaks their prayers for him, and offers up his prayers to God for them, gives them some hope of seeing himself and Timothy, and ends with the general salutation and benediction (Heb 13:18 to the end).

13:23 This Timothy may have been Paul’s traveling companion (see “Timothy” Profile); if so, his imprisonment is not mentioned elsewhere in the New Testament. He clearly knows the author and the recipients of this letter.