Micah 6:15
12 The city’s wealthy people readily resort to violence; her inhabitants tell lies; their tongues speak deceptive words. 13 I will strike you brutally and destroy you because of your sin. 14 You will eat, but not be satisfied. Even if you have the strength to overtake some prey, you will not be able to carry it away; if you do happen to carry away something, I will deliver it over to the sword. 15 You will plant crops, but will not harvest them; you will squeeze oil from the olives, but you will have no oil to rub on your bodies; you will squeeze juice from the grapes, but you will have no wine to drink.
John 4:37
34 Jesus said to them, “My food is to do the will of the one who sent me and to complete his work. 35 Don’t you say, ‘There are four more months and then comes the harvest?’ I tell you, look up and see that the fields are already white for harvest! 36 The one who reaps receives pay and gathers fruit for eternal life, so that the one who sows and the one who reaps can rejoice together. 37 For in this instance the saying is true, ‘One sows and another reaps.’ 38 I sent you to reap what you did not work for; others have labored and you have entered into their labor.”
Notes and References
"... In an agrarian economy, the sowing and planting of crops is a major event, the timing of which depends on the type of seed, for which there is always a “time” (Ecclesiastes 3:2). In the Bible, God is viewed as the One who instructs the farmer how to do his work rightly (Isaiah 28:29). Sometimes plowing the soil and planting went together; at other times one followed the other so that some seed fell on paths, rocky ground or Human Sowing. Sowing is spoken of figuratively for setting various things in motion. In both the Old Testament and the New Testament it is used for engaging in a righteous or loving activity (Proverbs 11:18; Ecclesiastes 11:1; Hosea 10:12; compare James 3:18), for initiating evil and disrupting unity (Job 4:8; Proverbs 6:14, 19; 16:28; 22:8) and for undertaking a spiritual task (Galatians 6:8–9). Linked with harvesting, it gives birth to proverbs about the link between energy expended and outcome expected, such as “you reap whatever you sow” (Galatians 6:7), “one sows and another reaps” (see Job 31:8; Micah 6:15; compare John 4:37) or “those who sow in tears reap in joy” (see Psalm 126:5; Proverbs 22:8). It is also a metaphor for giving, which if done sparingly will result in a small return, if done generously in a large return (2 Corinthians 9:7–10) ..."
Ryken, Leland Dictionary of Biblical Imagery (pp. 2719-2720) InterVarsity Press, 1998