διαγωνιστέον
From LSJ
ἀγαπήσεις τὸν πλησίον σου ὡς σεαυτόν → love your neighbor as yourself, thou shalt love thy neighbour as thyself, love thy neighbour as thyself
English (LSJ)
A one must make a great effort, Ph.2.471.
Greek (Liddell-Scott)
διαγωνιστέον: ῥημ. ἐπίθ., πρέπει τις ἰσχυρῶς νὰ προσπαθήσῃ, Φίλων 2. 471.
Spanish (DGE)
1 hay que esforzarse Ph.2.471, Dsc.Ther.p.55, c. inf. σπουδαστέον καὶ δ. ... φυλάττειν Mac.Aeg.Ep.magn.245.6.
2 hay que combatir τούτους Procl.Theol.Plat.1.33.13.