How does the passage explain spiritual maturity and growth?

In discussing the fig tree and its fruitfulness, the sermon illustrates the concept of spiritual maturity and growth within the Christian life. The phrase 'the fig tree putteth forth her green figs' from Song of Solomon 2 implies that just as figs grow and ripen, so do believers mature in their faith. The process of maturation is ongoing; as believers are nourished by the Word and the Spirit, they bear spiritual fruit that reflects Christ’s character. This growing in grace is a continual work of the Holy Spirit, and it is a delightful reality that, as God's people grow, they manifest the fruits of the Spirit—love, joy, peace—and can be assured of their place in Christ.