Robert Crawford emphasizes the comforting words of Jesus in John 14, urging believers not to let their hearts be troubled. He highlights the importance of knowing Christ as the way, truth, and life, and the assurance of His return to prepare a place for us. Crawford discusses the divine prescription for peace in a troubled world, which includes the presence of the Holy Spirit and the power of prayer in Jesus' name. He encourages the congregation to seek a personal relationship with Christ and to be aware of His presence in their lives. Ultimately, the sermon serves as a reminder of the peace that comes from faith in Jesus amidst life's challenges.