How long, how long must we sing this song? 
How long, how long?
My soul is in deep anguish. How long, Lord, how long? Psalm 6:3 NIV

How long, Lord? Will you forget me forever? How long will you hide your face from me? How long must I wrestle with my thoughts and day after day have sorrow in my heart? Psalm 13:1-2 NIV

How long, Lord, must I call for help, but you do not listen? Or cry out to you, "Violence!" but you do not save? Habakkuk 1:2 NIV

"How long" in other Psalms: 4:2, 35:17, 62:3, 74:9-10, 79:5, 80:4, 82:2, 89:46, 90:13 & 94:3
Wipe the tears from your eyes
Wipe your tears away
I'll wipe your tears away
I'll wipe your tears away
I'll wipe your bloodshot eyes
He will swallow up death in victory; and the Lord God will wipe away tears from off all faces... Isaiah 25:8 KJV

"God will wipe away every tear from their eyes." Revelation 7:17 NIV & GNB
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And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away. Revelation 21:4 KJV
We eat and drink while tomorrow they die ​ 
"Let us eat and drink," you say, "for tomorrow we die!" Isaiah 22:13 NIV
 
If the dead are not raised, "Let us eat and drink, for tomorrow we die." 1 Corinthians 15:32 NIV
The real battle just begun
To claim the victory Jesus won
When he had received the drink, Jesus said, "It is finished." With that, he bowed his head and gave up his spirit. John 19:30 NIV

O death, where is thy sting? O grave, where is thy victory? The sting of death is sin; and the strength of sin is the law. But thanks be to God, which giveth us the victory through our Lord Jesus Christ. 1 Corinthians 15:55-57 KJV

I do not claim that I have already succeeded or have already become perfect. I keep striving to win the prize for which Christ Jesus has already won me to himself. Philippians 3:12 GNB