2:1, 2—What “empty thing” do the nations keep muttering? The “empty thing” is the constant concern of human governments to keep perpetuating their own authority. This is empty because their purpose is doomed to failure. Can the national groups really hope to succeed when they take their stand “against Jehovah and against his anointed one”?
2:7—What is “the decree of Jehovah”? This decree is the covenant for a Kingdom, which Jehovah has made with his beloved Son, Jesus Christ.—Luke 22:28, 29.
2:7 In acts 13:33 it says: “even as it is written in the second psalm, ‘You are my son, I have become your Father this day.'”
This is from psalm 2:7 and it indicates to us that the numbering of the psalms are the same to our day and has not been changed.
2:12—In what way can the rulers of the nations “kiss the son”? In Bible times, kissing was an expression of friendship and faithfulness. It was a way to welcome guests. The kings of the earth are commanded to kiss the Son—that is, welcome him as the Messianic King.