When - Or, as in the margin. For the meaning of this verse, compare marginal references.
Matthew Henry
Concise Bible Commentary
God has, in wisdom, kept away from us the knowledge of future events, that we may be always ready for changes. We must all die, no flight or hiding-place can save us, nor are there any weapons of effectual resistance. Ninety thousand die every day, upwards of sixty every minute, and one every moment. How solemn the thought! Oh that men were wise, that they understood these things, that they would consider their latter end! The believer alone is prepared to meet the solemn summons. Wickedness, by which men often escape human justice, cannot secure from death.
SDA Bible Commentary (limited)
Volume 1-7
7. When. It is one of man’s weaknesses, and the cause of no small part of his anxiety, that he cannot foretell what may befall him and when it may happen (see Isa. 47:13).