Heb. 13:22. I have written only a little to you.
Despite the fact that he said so much, he still says "not much," of course in comparison with what he wished to say. He speaks to them here as if to say: even though you are fainthearted, bear with me, for no one should refuse on the grounds that much has been said, although, as we see, this does happen among the fainthearted. For they cannot endure a lengthy discourse.
Heb. 13:23. Know that our brother Timothy has been released,
They were not particularly hostile toward Timothy, which is why he placed him first. From where then was he released? Either he was in prison and was released, or he was sent away from Athens, since he was there (cf. Phil. 2:19).
Heb. 13:23. I also, together with him, if he comes soon, will see you.
And this is sufficient to persuade them to abandon their hostility toward him, when he is ready to come with a disciple. Perhaps this indeed happened, and he traveled to Judea from Rome. For the first time he was released by Nero, as we also said in the introduction to this epistle.
Heb. 13:24. Greet all your leaders and all the saints.
See what honor he bestows upon them, if he even greets the teachers through them; for it would have been more fitting for him to write the epistle to the teachers and through them greet those under their charge. By this he very wisely ministers especially to the weak.
Heb. 13:24. Greet you the Italians.
I am so attached to you that not only do I myself greet you, but I inspire such affection for you in others as well, so that they too, despite such a great distance, love you, and therefore send their greetings.
Heb. 13:25. Grace be with you all. Amen.
Since "grace" is something common, he asks for it generally for "all" — both for teachers and for those governed. What then is grace? The remission of sins, purification, the communion of the Spirit. How then could it be with you? If you do not neglect it and if you lead a life worthy of it. For it remains with us when we do good deeds; but it departs when we do not live according to the commandment of the One who grants it to us. But, knowing grace and what we have received through it, let us not offend in our life the One who has bestowed upon us such great blessings; but, glorifying Him with good deeds and showing that He sent down this grace not upon the ungrateful and unappreciative, let us take hold of it in our souls by the power of Christ Himself — the Benefactor of our souls. To Him be glory, and to the Father, together with the Holy Spirit, now and ever, and unto the ages of ages. Amen.