It seems clear that since we are appointed once to die then it should go without saying that we all have a set "number of days" to live. The issue is that we don't know how many days we each have. The word "coincidence" is a curious word when we use it to imply aimless chance. The root word is "coincide" which doesn't necessarily mean a kind of purposeless happenstance. The beginnings and "endings" of our lives do in fact "coincide" with the knowledge God has of our lives. In this way "coincidences" merely are events that necessarily coincide with the knowledge God has. Chance can't rationally be understood unless there is a context in which it can occur within. I believe the ultimate context is the being of God which in that case makes chance not "aimless" or without purpose but ultimately within the bounds of God's providence (or at least His knowledge). Chance only appears random to us because of our limited (finite) vantage point.
I don't know if any deity knows how long an individual will live, but I don't think we as individuals are supposed to know. So many of us would live without rules until the last, say, six months, and suddenly become repentant. So it's a mystery to US so we won't feel safe to "live it up" until the last minute.
Followers of Jesus Christ of Nazareth Are Taught That God Is The Author and The Finisher Of Our Faith. I Understand That To Mean Also That He Sets Man's Sunrise/Birth and Sunset/Death. Live Life On Purpose In Him. ------------------------------- Scripture Quote ------------------------------- And just as it is appointed for [all] men once to die, and ----------------------- after that the [certain] judgment, (Hebrews 9:27 AMP)
The bible talks about things you can do to lengthen your life and things you can do to shorten your life. Science also has things you can do to lengthen your life and things you can do to shorten your life. Economics also has rules that can lengthen your life and rules that can shorten your life. So do your friends and relationships with family and children and husbands wives etc...
Does everyone have a predetermined “time to die”? This belief was popular among the Greeks and Romans. According to pagan Greek mythology, the Fates were three goddesses that spun the thread of life, determined its length, and cut it. Ecclesiastes 3:1, 2 speaks of “a time to die.” But, showing that this is not a predetermined fixed moment for the individual, Ecclesiastes 7:17 counsels: “Do not be wicked overmuch, nor become foolish. Why should you die when it is not your time?” Proverbs 10:27 says: “The years themselves of the wicked ones will be cut short.” And Psalm 55:23 adds: “As for bloodguilty and deceitful men, they will not live out half their days.” What, then, does Ecclesiastes 3:1, 2 mean? It is simply discussing the continuous cycle of life and death in this imperfect system of things. There is a time when people are born and a time when they die—usually at not more than 70 or 80 years of age, but sometimes sooner and sometimes later.—Ps. 90:10; see also Ecclesiastes 9:11. (more in comments)