Matthew 9:37

Then he said to his disciples, "The harvest is rich, but the labourers are few;

Luke 10:2

He said to them, "The harvest is rich, but the labourers are few; so pray the Lord of the harvest to send labourers to gather his harvest.

Matthew 28:19

go and make disciples of all nations, baptize them in the name of the Father and the Son and the holy Spirit,

Mark 16:15

And he said to them, "Go to all the world and preach the gospel to every creature:

Luke 24:47

and that repentance and the remission of sins must be preached in his name to all nations, beginning from Jerusalem.

John 4:35-36

You have a saying, have you not, 'Four months yet, then harvest'? Look round, I tell you; see, the fields are white for harvesting!

Acts 16:9

A vision appeared to Paul by night, the vision of a Macedonian standing and appealing to him with the words, "Cross to Macedonia and help us."

Acts 18:10

for I am with you, and no one shall attack and injure you; I have many people in this city."

1 Corinthians 3:9

We work together in God's service; you are God's field to be planted, God's house to be built.

2 Corinthians 6:1

I appeal to you too, as a worker with God, do not receive the grace of God in vain.

Philippians 2:19-21

I hope in the Lord Jesus to send you Timotheus before long, that I may be heartened by news of you.

Colossians 4:11

and so does Jesus who is called Justus. These are the only comrades in the work of God's realm, belonging to the circumcised, who have been any comfort to me.

1 Thessalonians 5:12-13

Brothers, we beg you to respect those who are working among you, presiding over you in the Lord and maintaining discipline;

1 Timothy 5:17

Presbyters who are efficient presidents are to be considered worthy of ample remuneration, particularly those who have the task of preaching and teaching:

Treasury of Scripture Knowledge

Summary

Then saith he unto his disciples, The harvest truly is plenteous, but the labourers are few;

Bible References

The harvest

Matthew 28:19
go and make disciples of all nations, baptize them in the name of the Father and the Son and the holy Spirit,
Mark 16:15
And he said to them, "Go to all the world and preach the gospel to every creature:
Luke 10:2
He said to them, "The harvest is rich, but the labourers are few; so pray the Lord of the harvest to send labourers to gather his harvest.
Luke 24:47
and that repentance and the remission of sins must be preached in his name to all nations, beginning from Jerusalem.
John 4:35
You have a saying, have you not, 'Four months yet, then harvest'? Look round, I tell you; see, the fields are white for harvesting!
Acts 16:9
A vision appeared to Paul by night, the vision of a Macedonian standing and appealing to him with the words, "Cross to Macedonia and help us."
Acts 18:10
for I am with you, and no one shall attack and injure you; I have many people in this city."

But

1 Corinthians 3:9
We work together in God's service; you are God's field to be planted, God's house to be built.
2 Corinthians 6:1
I appeal to you too, as a worker with God, do not receive the grace of God in vain.
Philippians 2:19
I hope in the Lord Jesus to send you Timotheus before long, that I may be heartened by news of you.
Colossians 4:11
and so does Jesus who is called Justus. These are the only comrades in the work of God's realm, belonging to the circumcised, who have been any comfort to me.
1 Thessalonians 5:12
Brothers, we beg you to respect those who are working among you, presiding over you in the Lord and maintaining discipline;
1 Timothy 5:17
Presbyters who are efficient presidents are to be considered worthy of ample remuneration, particularly those who have the task of preaching and teaching: