How do we know Jesus is the anointed king mentioned in Psalm 2?

In Psalm 2, the title of 'anointed' refers specifically to Jesus, highlighting His roles as prophet, priest, and king. The declaration 'You are my Son; today I have begotten you' signifies His unique relationship with the Father, indicating both His divine nature and eternal sonship. This eternal generation is not time-bound but exists before the foundation of the world. Hence, Jesus is reaffirmed as the King set upon God's holy hill of Zion. The acknowledgment of Christ as the anointed one is foundational to understanding His authority and role in redemptive history.