The righteous shall flourish like the palm tree: he shall grow like a cedar in Lebanon.
The righteous shall flourish like the palm tree - in contrast to "the wicked," who 'spring as the grass, and do flourish' for a brief space, soon to be "destroyed forever" (Psalms 92:7). The psalm, as it refers to the Church primarily, has here an allusion to the tabernacle, the holy place of meeting between God and His assembled people (Psalms 92:13). The holy candlestick in the sanctuary, the symbol of the Church, had the form of a tree with flowers and fruit, to denote the beauty, the ever-fresh joy, and the fruitfulness of the people of God. Figures of flowers were upon the curtains of the tabernacle; and the interior wall of Solomon's temple was decorated with carved palms and opening blossoms (margin, 1 Kings 6:29), along with cherubic figures.
He shall grow like a cedar in Lebanon - upright, and ever retaining its fresh verdure. So, spiritually, believers.