What role do trials play in a Christian's life according to the sermon?

The sermon discusses how even the righteous face trials, as exemplified by Zacharias and Elizabeth's barrenness. These afflictions serve to deepen the believer's faith and reliance on God. James 1:2-4 encourages believers to 'count it all joy' when facing trials because they produce perseverance and maturity in faith. This principle is rooted in the understanding that God uses difficult circumstances to refine His people, drawing them closer and preparing them for greater reliance on His strength and grace.