Hebrews 1:2

At the end of these days (ep esxatou twn hmerwn toutwn). In contrast with palai above.

Hath spoken (elalhsen). First aorist indicative of lalew, the same verb as above, "did speak" in a final and full revelation.

In his Son (en uiw). In sharp contrast to en toiv profhtaiv. "The Old Testament slopes upward to Christ" (J. R. Sampey). No article or pronoun here with the preposition en, giving the absolute sense of "Son." Here the idea is not merely what Jesus said, but what he is (Dods), God's Son who reveals the Father (John 1:18). "The revelation was a son-revelation" (Vincent).

Hath appointed (eqhken). First aorist (kappa aorist) active of tiqhmi, a timeless aorist.

Heir of all things (klhronomon pantwn). See Mark 12:6 for o klhronomov in Christ's parable, perhaps an allusion here to this parable (Moffatt). The idea of sonship easily passes into that of heirship (Galatians 4:7; Romans 8:17). See the claim of Christ in Matthew 11:27; Matthew 28:18 even before the Ascension.

Through whom (di ou). The Son as Heir is also the Intermediate Agent (dia) in the work of creation as we have it in Colossians 1:16 f.; John 1:3.

The worlds (touv aiwnav). "The ages" (secula, Vulgate). See Hebrews 11:3 also where touv aiwnav=ton kosmon (the world) or the universe like ta panta (the all things) in Hebrews 1:3; Romans 11:36; Colossians 1:16. The original sense of aiwn (from aei, always) occurs in 5:20, but here "by metonomy of the container for the contained" (Thayer) for "the worlds" (the universe) as in LXX, Philo, Josephus.