In Psalm 102:26-27, the writer emphasizes God's immutability—meaning that God does not change—by contrasting God's eternal, unchanging nature with the transient nature of creation. The verses highlight how the heavens and the earth will perish, but God remains the same. This passage underscores both God's sovereignty over creation and His eternal nature, reflecting that while everything else may fade, God endures forever.
Thus, the most fitting link in this context is eternality. The passage exemplifies how God's unchanging nature relates to His eternal existence, affirming both His sovereignty over time and creation.