δετέον
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.
English (LSJ)
A one must bind, Gp.4.12.16.
Greek (Liddell-Scott)
δετέον: ῥημ. ἐπίθ., πρέπει τις νὰ δέσῃ, Γεωπ. 4, 12, 16.
Spanish (DGE)
hay que atar τὸ δὲ πρὸς τῇ τομῇ μέρος τοῦ πρέμνου δ. δεσμῷ Gp.4.12.16.