Passage
Grace [be] with you all. Amen.
Grace [be] with you all. Amen.
Hebrews 13:23 Know that our brother Timotheus is set at liberty; with whom, if he should come soon, I will see you.
Hebrews 13:24 Salute all your leaders, and all the saints. They from Italy salute you.
Hebrews 13:25 Grace [be] with you all. Amen.
The verse centers on "grace" and "amen". It is saying that salvation is received as God's gift through faith, so boasting is pushed out by the wording itself.
The prior verse says "Salute all your leaders and all the...", giving immediate footing for "grace" and "amen". In Hebrews context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "grace" and "amen" with trust shaped by these words, not by a vague optimism outside the passage.