John Chrysostom : "Seeing therefore it remaineth" (he says) "that some must enter therein, and they to whom it was first preached entered not in because of unbelief: again he limiteth a certain day, saying in David, To-day, after so long a time; as it has been said before." But what is it that he means? "Seeing then" (he means) that "some must" certainly "enter in," and "they did not enter in." And that an entrance is proclaimed, and that "some must enter in," let us hear from what this is clear. Because after so many years (he says) David again says: "To-day if ye will hear His voice, harden not your hearts." "For if Joshua had given them rest he would not afterward have spoken of another day." It is evident, that he says these things, as of persons who are to attain some recompense. — Homily on Hebrews 6 Oecumenius : For if some must enter, and those who entered have not entered into the rest of the promised land, it again defines a third rest, so that, as he says, some may enter into it. — The Pseudo-Oecumenian Catena on Hebrews