All together now

 Who then is Paul, and who is Apollos, but ministers through whom you believed, as the Lord gave to each one? I planted, Apollos watered, but God gave the increase. So then neither he who plants is anything, nor he who waters, but God who gives the increase. Now he who plants and he who waters are one, and each one will receive his own reward according to his own labor. For we are God's fellow workers; you are God's field, you are God's building. - 1 Corinthians 3.5-9

Virtually everything we do requires a team effort. Spreading the gospel is certainly a work that requires that every do their part. Here Paul mentions that some plant and some water, but God gives the increase. I think he is just illustrating the truth that the work is a team effort.

We might also say that some have to till the soil. We might even go back a step and say that some have to pick out the stones and prepare the soil for tilling. Some others watch the crops. Some add fertiliser. Every part of the task is important.

None of us can take credit when God's work is accomplished. When someone comes to Christ there is no single 'soul winner' who does the job alone.

In some circles the reaper is elevated above the planter, the waterer, or any other worker. We forget one thing – God is the true ‘soul winner,’ only He gives the increase.

Our task is to be faithful in sharing the gospel. Sometimes all we can do is dig a few stones out of the way. Sometimes we get to plant the seed. Sometimes we get to water the fertile soil. And sometimes we get to see the final step and rejoice when someone comes to Christ. When we do, we ought to stop and praise God for the planters and waterers and to remember that only God Himself gives the increase.

Even those times when we get to plant, water, and see the reaping it is still only God who gets the credit. 

We are fellow-workers, but it is God’s field and it is His building.