Why does David refer to himself as a green olive tree in Psalm 52?

In Psalm 52:8, David uses the metaphor of a green olive tree to convey his deep trust in the mercy of God. This imagery portrays vitality and endurance, suggesting that, despite his circumstances, David’s faith is firmly rooted in God's goodness. Unlike those who trust in worldly riches and power, David asserts that his strength comes from his relationship with God. This also highlights the distinct separation between the wicked and the righteous; while the wicked face destruction, the righteous, like David, are preserved and nourished in God's presence. Thus, he is declaring his identity and security in the Lord, which serves as a powerful affirmation for all believers.