Cheryl Schatz

2:2 The kings … take their stand … against the LORD. To reject the Lord’s anointed king was to reject God himself. The Psalmist (David, according to Acts 4:25) would understand the expression his Anointed One (as in 1 Sam 26:11) to refer to the human king whom God had chosen to maintain justice in the land. Yet here is also a foreshadowing of the Messiah who was to come; that is, Jesus. To reject him is to reject the God who sent him (cf. Matt 10:40; John 12:48).

The College Press NIV commentary. (93).

2:2 The king is the Lord’s “anointed” (mashiah means “anointed one”, translated into Greek as christos). Every legitimate king was a “messiah” (1 Sm 16:13; 2 Kg 11:12); but the biblical writers prophesied that a greater king was coming, the Messiah (e.g., Is 9:2–7; Jr 23:5–6; Ezk 34:23–24; cp. 2 Sm 7:11–15). To reject God’s anointed king is to reject God.

The Apologetics Study Bible: Real Questions, Straight Answers, Stronger Faith (789–790).

The term “Christ” or “Messiah” was always seen as the term that referred to a human king who would represent God. This is why it is not a term that is referred to God in eternity past, but always points to the incarnation.