The simple verb τυγχάνω means originally to hit the mark; hence to fall in with, light upon, attain.
The election (ἡ ἐκλογὴ)
Abstract for concrete. Those elected; like ἡ περιτομή the circumcision for those uncircumcised (Eph 2:11. Compare τὴν κατατομήν the concision, Phi 3:3).
Were blinded (ἐπωρώθησαν)
Rev., correctly, hardened, though the word is used of blindness when applied to the eyes, as Job 17:7, Sept. See on hardness, Mar 3:5. Compare σκληρύνει hardeneth, Rom 9:18.