Called to Harvest
Things change around a farm when it’s harvest season. The activity increases one hundredfold, and the day the farmer gets paid draws closer. If they reap a bountiful harvest, his wages will reflect that, but they often lose money if the harvest is weak. Christians are called to reap a harvest as well. The fields you are called to harvest is the place God has you right now. Those who do will receive their wages in heaven.
JOHN 4:35-36
Look, I tell you, lift up your eyes, and see that the fields are white for harvest. Already the one who reaps is receiving wages and gathering fruit for eternal life, so that sower and reaper may rejoice together.
Jesus uses the analogy of fields that need to be harvested to get His point across. He starts by describing how the fields are ripe, to the point of going bad. If you take too long to harvest your crops, you run the risk of rotting. Then Jesus says that those reaping are receiving wages and storing up fruit for eternal life. If you are evangelizing the lost, you will receive a reward in heaven. Jesus is encouraging every believer to share the Gospel.