2
καὶ θήσομαι τὴν διαθήκην μου ἀνὰ μέσον ἐμοῦ καὶ ἀνὰ μέσον σοῦ καὶ πληθυνῶ σε σφόδρα
2067. 'And I will bless him' means the multiplication of this, namely of the Rational meant by 'a son'. This is clear from the meaning of 'being blessed' as being enriched with everything good and true, dealt with just above in 2065.