Psalm 126:5-6 (KJV)
5 They that sow in tears shall reap in joy.
6 He that goeth forth and weepeth, bearing precious seed, shall doubtless come again with rejoicing, bringing his sheaves with him.
John 4:35 (KJV)
35 Say not ye, There are yet four months, and then cometh harvest? behold, I say unto you, Lift up your eyes, and look on the fields; for they are white already to harvest.
Matthew 9:37-38 (KJV)
37 Then saith he unto his disciples, The harvest truly is plenteous, but the labourers are few;
38 Pray ye therefore the Lord of the harvest, that he will send forth labourers into his harvest.
Matthew 20:1-7 (KJV)
1 For the kingdom of heaven is like unto a man that is an householder, which went out early in the morning to hire labourers into his vineyard.
2 And when he had agreed with the labourers for a penny a day, he sent them into his vineyard.
3 And he went out about the third hour, and saw others standing idle in the marketplace,
4 And said unto them; Go ye also into the vineyard, and whatsoever is right I will give you. And they went their way.
5 Again he went out about the sixth and ninth hour, and did likewise.
6 And about the eleventh hour he went out, and found others standing idle, and saith unto them, Why stand ye here all the day idle?
7 They say unto him, Because no man hath hired us. He saith unto them, Go ye also into the vineyard; and whatsoever is right, that shall ye receive.