κρατύνειν
From LSJ
ἀλλήλων τὰ βάρη βαστάζετε, καὶ οὕτως ἀναπληρώσετε τὸν νόμον τοῦ Χριστοῦ → bear each other's burdens, and in that way fulfill the anointed King's Law (Galatians 6:2)
Greek > English (Woodhouse Verbs Reversed)
(see also κρατύνω): govern, rule, strengthen, be master of
Lexicon Thucydideum
firmiorem reddere, munire, to make stronger, fortify, 1.69.1, 3.18.1,
MED. idem, the same4.52.3, 4.114.2,
Transl. translate 3.82.6.