Our faith is not only tested, but it is tested to the point of being proven genuine. Persecution and suffering may feel like they are too much to handle many times,but when we know that the fire of persecution and trials can reveal the genuineness of our faith, we can live with a hopeful attitude in the midst of trials. The purity of our faith is revealed as a result of these difficulties we find ourselves in. Use this article to explain to your congregation how gold is refined by fire (see 1 Peter 3:7), thus removing all the impurities: https://www.gold-traders.co.uk/gold-information/how-to-refine-gold.asp. Compare this process with our spiritual refinement, which reveals the genuineness of our faith.
Source: https://www.gold-traders.co.uk/gold-information/how-to-refine-gold.asp