“Therefore, let those also who suffer according to the will of God entrust their souls to a faithful Creator in doing what is right” (1 Peter 4:19).
By this point Peter has assumed that his original readers, since many had endured persecution, knew what suffering was like. Therefore, he could also present the Lord as a sovereign God who could be trusted to do “what is right.” Because it is God’s will to allow sufferings and trials in the lives of all believers, it is only logical that Peter exhort us to entrust ourselves to Him during such times.
Peter’s instruction is also related to Romans 12:1, “I urge you therefore, brethren, by the mercies of God, to present your bodies a living and holy sacrifice, acceptable to God, which is your spiritual [or rational] service of worship.” Paul reminds us that it is much easier to react as we should to trials if we have already resolved, with God’s help, to entrust everything to Him. Then we can face with calm and confidence, rather than worry and fear, whatever God allows.