It is not contested that the quotations that follow refer to Jesus Christ, but the point is that they could never have been addressed to the angels, because they speak in terms which it would be entirely inappropriate to use of angels. We never read such language used of them anywhere in the Bible, and in this case the argument from silence is conclusive.
We forget great passages like this, and great truths about the status and the eternal Godhead of our Saviour as if we were on our own. We are subject to troubles and pressures and we go to pieces. No, remember words like this that are so momentous and majestic. Read them two or three times, and think about them; take them in. Give a word of praise and worship to God quietly. Even as you read each great statement, because then these truths of Christ and his greatness and power and glory, really surround us and uphold us, no matter what we pass through.
Some feel – and there could be truth in this – that when the psalmist says, ‘Thou art my Son, this day have I begotten thee, it means in eternity past, and ‘this day’ is being used as a term to describe eternity. That is probably unlikely; it is a much sounder interpretation of Psalm 2 and rather more obvious to see it as predictive: it’s a psalm of prophecy about the incarnation of Christ, his being begotten in time. But the point is that the Son is already the Son even before he’s begotten in time, and Psalm 2 makes it clear, and so does this quotation.