Some of you are granted many decades - our oldest member in Calvin church is 95. A close friend of my family is over 100, a wonderful Christian man. Others of us have buried loved ones before they hit puberty or ever held down a steady job. We don't have the luxury of waiting till whenever. It may not ever come for us.
Life hangs on a very delicate thread.
Chronology - the bible points out in several places that we have this gift of time to build our relationships with each other and with our Lord. Revelation 2.21 describes it as time given to get things set right with our Saviour. And some won't. The chronology of time. It's a little bit like our supply of clean drinking water here in Canada.