βεβαιόω, -ῶ
(< βέβαιος), [in LXX: Ps 40 (41):12 (נצב hi.), 118 (119):28 (קוּם pi.), III Mac 5:42*;]
to confirm, establish, secure, of things (cl.): λόγον, Mk 16:[20]; ἐπαγγελίας, Ro 15:8; of persons (DCG, ii, 605): I Co 1:8, II Co 1:21. Pass., I Co 1:6, Col 2:7, He 2:313:9 (as an Attic legal term, to guarantee the validity of a purchase, establish or confirm a title; v. next word, Cremer, 139; cf. δια-β.).†