John Calvin Reformed @genevareformer

23. Know ye that our brother, etc. Since the termination of the Greek verb γινώσκετε, will admit of either renderings, we may read, “Ye know,” or, “Know ye;” but I prefer the latter reading, though I do not reject the other. The Vulgate Beza and almost all expounders, render it as an imperative, “Know ye.” — Ed.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. The apostle recommends himself, and his fellow-sufferers, to the prayers of the Hebrew believers (Heb 13:18): "Pray for us; for me and Timothy" (mentioned Heb 13:23), "and for all those of us who labour in the ministry of the gospel." 1. This is one part of the duty which people owe to their ministers.

Commenting on Hebrews 13:18-25

John Gill Reformed Baptist @doctorgill

Know ye that our brother Timothy is set at liberty,.... This is the same person to whom the Apostle Paul wrote two epistles, and whom he often calls his son, though sometimes his brother, as here, Col 1:1 of him he says, that he was set at liberty, or "dismissed"; either by the apostle, by whom he was sent into some parts, upon some business...