Tafsiran Mazmur 2:12: Rashi, Radak & Ibn Ezra

Arm yourselves with purity Arm yourselves with purity of the heart. Some explain נשקו as garnimont in Old French, equipping. (This is from the verb, garnir. Garnimont means to provide, as in Gen. 41:40). Menachem (p. 179) interprets it as an expression of desire, as (in Gen. 3:16): “Your longing (תשוקתך) shall be for your husband.”

Kiss the son: – as (in the verse) “and he kissed all his brethren” (Gen. 45:15). And (the word) בר is the same as בן; and so “What, my son (בני)? ”; and “what, O son (בר) of my womb?” (Prov. 31:2). Or it may be interpreted by “the pure (ברי) of heart” (Ps. 73:1). If its meaning is “son,” this will be its interpretation: Kiss this son whom God has called “son,” as He says (above): Thou art My son. And the command is Kiss, because it is the custom for a servant to kiss the hand of the master. And if its meaning is “pure,” its interpretation is, “What have I to do with you, for I am pure in heart and there is no wickedness in me that ye should come and fight against me? Your duty is to kiss me and to confess that I am king by the command of God.” And בר may also be fittingly interpreted from (the verse) “Choose (ברו) you a man for you” (1 Sam. 17:8), upon the analogy of “Saul the chosen of the Lord” (2 Sam. 21:6).

Kiss the son (נַשְּׁקוּ־בַר - nashku var): Behold, "Serve Ad-nai" [from v. 11] corresponds to [the rebellion] "against Ad-nai" [in v. 2]. And "Kiss the son" [nashku var] corresponds to [the rebellion] "against His anointed" [in v. 2].

lest He become angry Heb. יאנף, lest He become angry.

and you perish in the way Like the matter that is stated (above 1:16): “but the way of the wicked shall perish.”

for in a moment His wrath will be kindled For in a short moment His wrath will suddenly be kindled against them, and at that time, the praises of all those who take refuge in Him will be discerned, the praises of all who take refuge in Him.