The circumstances of our lives can change in an instant. A dear friend was hit by a drunk driver last week. He remains in the hospital, facing a long period of recovery. Another friend had an accident yesterday and broke his neck. He survived, was rushed to surgery, and his outcome is still unknown. Illness, accidents, and death touch our lives and those we know and love practically every day. David expressed his yearning to know the quantity and end of his days. Like us, David did not know when he would die. But he wanted to know the truth about his life so he could guard himself against sin while living in hope (Ps. 39:1-3, 7-8). We yearn for the same knowledge. Like David, let us pause (Selah) and reflect on life’s uncertainty and brevity and their impact on us. (1) We are frail (v. 4). Life is fleeting. No matter how strong we are, our bodies will ultimately fail us and die. Therefore, we must lay up heavenly treasures for life beyond this flesh (2 Cor. 4:17-5:1). (2) God is the giver of life (v. 5). Life is a gift to be cherished, not squandered (Eccl. 5:18-20; James 1:17). Met us honor His will whatever life brings (Eccl. 12:13). (3) Life is short (v. 5). Our lives are brief like a vapor’s rapid disappearance (James 1:14). In comparison to God’s eternal existence, our time is “nothing” before Him. As we busy ourselves with daily activities, we must remember this life’s treasures are vain (Ps. 39:6). “Blessed is the man who trusts in the Lord, and whose hope is the Lord” (Jer. 17:7).