Methodius of Olympus — on Rev 20:6 (Discourse IX.-Tusiane)

“Such fruit it is necessary that we bring when we come to the judgment-seat of Christ, on the first day of the feast; for if we are without it we shall not be able to feast with God, nor to have part, according to John, in the first resurrection. For the tree of life is wisdom first begotten of all. "She is a tree of life to them that lay hold upon her," says the prophet; "and happy is every one that retaineth her." "A tree planted by the waterside, that will bring forth his fruit in due season;" that is, learning and charity and discretion are imparted in due time to those who come to the waters of redemption.”