F.B. Meyer emphasizes the importance of being molded by sound doctrine, comparing it to metal being cast into various forms. He explains that just as different vessels serve unique purposes in the temple, believers are shaped by God for specific roles in His kingdom. Meyer encourages believers to embrace their unique design and to obey God's teachings wholeheartedly, warning that failure to do so may lead to a painful reformation process. He reassures that our earthly struggles are part of a divine preparation for our eternal purpose. Ultimately, he reminds us that all things work together for good for those who love God.