ὁδευτέον

From LSJ

ἐν μὲν γὰρ ταῖς ἐπιστολαῖς αὐτοῦ οὐδὲ μνήμην τῆς οἰκείας προσηγορίας ποιεῖται, ἢ πρεσβύτερον ἑαυτὸν ὀνομάζει, οὐδαμοῦ δὲ ἀπόστολον οὐδ' εὐαγγελιστήν (Eusebius, Demonstratio evangelica 3.5.88) → For in his epistles he doesn't even make mention of his own name — or simply calls himself the elder, but nowhere apostle or evangelist.

Source

Greek (Liddell-Scott)

ὁδευτέον: ῥημ. ἐπίθ, τοῦ ὁδεύω, δεῖ ὁδεύειν, Ὠριγέν. Ι, 1521Β, IV, 457C, Γρηγ. Νύσσ. ΙΙ, 21Β.