John 4:35-38

"Don't you have a saying, 'It's still four months until harvest'? I tell you, open your eyes and look at the fields! They are ripe for harvest. Even now the one who reaps draws a wage and harvests a crop for eternal life, so that the sower and the reaper may be glad together. Thus the saying 'One sows and another reaps' is true. I sent you to reap what you have not worked for. Others have done the hard work, and you have reaped the benefits of their labor." 

I tell you, open your eyes and look at the fields! They are ripe for harvest 
Matthew 9:37-38  Then he said to his disciples, "The harvest is plentiful but the workers are few. Ask the Lord of the harvest, therefore, to send out workers into his harvest field."
Luke 10:2  He told them, "The harvest is plentiful, but the workers are few. Ask the Lord of the harvest, therefore, to send out workers into his harvest field."

Even now the one who reaps draws a wage and harvests 
Romans 1:13  I do not want you to be unaware, brothers and sisters, that I planned many times to come to you (but have been prevented from doing so until now) in order that I might have a harvest among you, just as I have had among the other Gentiles.

a crop for eternal life 
John 3:16  For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.
John 3:36  Whoever believes in the Son has eternal life, but whoever rejects the Son will not see life for God's wrath remains on them.
Galatians 6:7-8  Do not be deceived: God cannot be mocked. A man reaps what he sows. Whoever sows to please their flesh, from the flesh will reap destruction; whoever sows to please the Spirit, from the Spirit will reap eternal life.

Thus the saying 'One sows and another reaps' is true 
Job 31:7-8  "... if my steps have turned from the path, if my heart has been led by my eyes, or if my hands have been defiled, then may others eat what I have sown, and may my crops be uprooted."
Micah 6:15  You will plant but not harvest; you will press olives but not use the oil, you will crush grapes but not drink the wine.

Scriptures taken from the Holy Bible, New International Version® NIV®, 
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