Matthew Poole and continuators on Hebrews 13:23

23 Know ye that our brother Timothy is set at liberty; with whom, if he come shortly I will see you.

He acquaints them with the good News of his dismissing Timothy to them, to acquaint them how it fared with him, as he dismissed, and sent Tychicus to the Colossians, Colos. 4.7, 8. Epaphroditus to the Phillippians, Phil. 2.25, 28. as he intended to have sent Timothy with them, v. 19, 23, 24. but he stopt him to see the issue of his Appearance before Nero Caesar; which being over, he dispatcheth him with an Account of it to these Hebrews, and the rest of the Churches, and signifieth his purpose, That if he quickly returns from them again, then he would visit them together with him. That the word [non-Latin text not transcribed] noteth, or signifieth the dismission of a Person about Business, is seen, Acts 13.3. To which Interpretation the Subscription of the Epistle inclines; and the Scripture is silent of any Troubles or Restraint of Timothy at all, Phil. 2.19, 20.