Luke 10:1, 2

After this, the Lord Jesus formed thirty-five teams among the other disciples. Each team was two disciples, seventy in all, and he commissioned them to go ahead of him into every town he was about to visit.

He released them with these instructions: “The harvest is huge. But there are not enough harvesters to bring it in. As you go, plead with the Owner of the Harvest to send out many more workers into his harvest fields.