The answer is: Psalm 2

Acts 13:33 - Paul's quotation from Psalm 2 highlights Jesus as God's anointed king. This psalm underscores the sovereignty of God and the futility of earthly rulers opposing divine plans. The New Testament frequently links Christ to psalmic prophecy, echoing themes of authority and kingship found in Isaiah and Revelation as well.

Psalm 2 is an exciting chapter with rich themes that resonates not just within the context of its original setting, but also profoundly through the lens of the New Testament. It's a royal psalm that portrays the Israelite king, likely a representation of an anointed figure, asserting his authority against the backdrop of rebellious nations. The text showcases a divine conversation where God laughs at the futile schemes of kings and rulers. This cosmic drama emphasizes the ultimate sovereignty of God, reminding everyone that although earthly powers vie for control, God's sovereign will stands unopposed.

Interestingly, this idea isn't confined to just Psalm 2 or the New Testament. When you peel back the layers, you’ll find echoes in other biblical texts such as Isaiah, where the lofty understanding of God's plan traverses time and skepticism. In Revelation, the theme culminates in declaring Christ's almighty reign.

Moreover, historical nuggets can enhance our perspective - many early believers found solace in these scriptures during turbulent times, as they reinforced the belief that whatever chaos surrounded them, God’s authority was unshakeable.

So, when Paul quoted Psalm 2, it wasn't merely an affirmation of Jesus as king, but a declaration brimming with fiesta exuberance for the belief in an expected future—the culmination of God’s promises reflecting right through generations of hopeful hearts. Isn't that just a marvelous dive into unity—forming a rich tapestry knitted from the strands of shared wisdom!