ποριστέον
From LSJ
οὕτως ἔσονται οἱ ἔσχατοι πρῶτοι καὶ οἱ πρῶτοι ἔσχατοι· πολλοὶ γάρ εἰσι κλητοί, ὀλίγοι δὲ ἐκλεκτοί → so the last shall be first and the first last for many be called but few chosen
English (LSJ)
A one must provide, Epicur.Fr. 481, Chrysipp.Stoic.3.172, Iamb.in Nic.p.58P.
Greek (Liddell-Scott)
ποριστέον: ῥημ. ἐπίθ., δεῖ πορίζειν, Σχόλ. εἰς Εὐρ. Ὀρ. 671.