Life is …

1. Life is vain because it returns to dust.

Look at Psalms 90:3 – “You turn man back into dust And say, "Return, O children of men.” 

2. Life is vain because it’s short.

Look at Psalms 90:4-6: “For a thousand years in Your sight Are like yesterday when it passes by, Or as a watch in the night.  You have swept them away like a flood, they fall asleep; In the morning they are like grass which sprouts anew.  In the morning it flourishes and sprouts anew; Toward evening it fades and withers away.” 

3. Life is vain because its pride is labor and sorrow.

Look at Psalms 90:10 – “As for the days of our life, they contain seventy years, Or if due to strength, eighty years, Yet their pride is but labor and sorrow; For soon it is gone and we fly away.”