And thou Lord, in the beginning hast laid the foundation of the earth,.... The person here addressed, as the Lord or Jehovah, and as the Maker of the heavens and the earth, is the same with the Son spoken to, and of, before; for the words are a continuation of the speech to him, though they are taken from another psalm, from Ps 102:25.
The phrase, "thou, Lord" is taken from Ps 102:12 and is the same with, "O my God", Ps 102:24 and whereas it is there said, "of old", and here, in the beginning, the sense is the same; and agreeably to the Septuagint, and the apostle, Jarchi interprets it by hlyxtm, "at", or "from the beginning"; and so the Targum paraphrases it, zywrv Nm, "from the beginning", that the creatures were created, &c.