Matthew 9:37

Then he said to his disciples, The harvest indeed is great, but the laborers few.

Luke 10:2

And he said to them, The harvest indeed is great, but the laborers few; pray, therefore, the Lord of the harvest to thrust out laborers into his harvest.

Matthew 28:19

go and disciple all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Spirit;

Mark 16:15

And he said to them, Go into all the world, preach the good news to all the creation;

Luke 24:47

and that a change of mind and forgiveness of sins should be preached in his name to all nations, beginning from Jerusalem.

John 4:35-36

Do you not say, There are yet four months, and the harvest comes? behold, I say to you, lift up your eyes and see the fields; for they are white for a harvest.

Acts 16:9

And a vision appeared by night to Paul; a certain man of Macedonia standing, asking him, and saying, Come over into Macedonia and help us.

Acts 18:10

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

1 Corinthians 3:9

For we are God's co-laborers; you are God's field, God's building.

2 Corinthians 6:1

And being also co-laborers we exhort you not to receive the grace of God in vain,??2 for he says, In an acceptable time I heard you, and in a day of salvation I helped you; behold, now is an acceptable time, behold, now is a day of salvation,??3 giving no offense in any thing, that the ministry may not be blamed,

Philippians 2:19-21

But I hope in the Lord Jesus to send Timothy to you shortly, that I may be refreshed when I know your affairs.

1 Thessalonians 5:12-13

And we beseech you, brothers, to know those who labor among you, and preside over you in the Lord and admonish you,

1 Timothy 5:17

Let the elders who rule well be accounted worthy of a double compensation, especially those who labor in word 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 disciple all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Spirit;
Mark 16:15
And he said to them, Go into all the world, preach the good news to all the creation;
Luke 10:2
And he said to them, The harvest indeed is great, but the laborers few; pray, therefore, the Lord of the harvest to thrust out laborers into his harvest.
Luke 24:47
and that a change of mind and forgiveness of sins should be preached in his name to all nations, beginning from Jerusalem.
John 4:35
Do you not say, There are yet four months, and the harvest comes? behold, I say to you, lift up your eyes and see the fields; for they are white for a harvest.
Acts 16:9
And a vision appeared by night to Paul; a certain man of Macedonia standing, asking him, and saying, Come over into Macedonia and help us.
Acts 18:10
for I am with you; and no one shall attack you to hurt you, for I have many people in this city.

But

1 Corinthians 3:9
For we are God's co-laborers; you are God's field, God's building.
2 Corinthians 6:1
And being also co-laborers we exhort you not to receive the grace of God in vain,??2 for he says, In an acceptable time I heard you, and in a day of salvation I helped you; behold, now is an acceptable time, behold, now is a day of salvation,??3 giving no offense in any thing, that the ministry may not be blamed,
Philippians 2:19
But I hope in the Lord Jesus to send Timothy to you shortly, that I may be refreshed when I know your affairs.
1 Thessalonians 5:12
And we beseech you, brothers, to know those who labor among you, and preside over you in the Lord and admonish you,
1 Timothy 5:17
Let the elders who rule well be accounted worthy of a double compensation, especially those who labor in word and teaching.