how

Psalm 39:4, 5
"Show me, O LORD, my end and the measure of my days. Let me know how fleeting my life is. . . .

Psalm 89:47, 48
Remember how short is my lifespan. For what futility You have created all men! . . .

Psalm 90:12
So teach us to number our days, that we may present a heart of wisdom.

Job 7:6-8
My days are swifter than a weaver's shuttle; they come to an end without hope. . . .

when

Psalm 7:6
Arise, O LORD, in Your anger; rise up against the fury of my enemies. Awake, my God, and ordain judgment.

Revelation 6:10, 11
And they cried out in a loud voice, "How long, O Lord, holy and true, until You judge those who live on the earth and avenge our blood?" . . .