Thom S. Rainer:

Church fostering will move into the early adoption stage. Church fostering takes place when a healthier church helps a less healthy church for a defined period, usually less than a year. We anticipate 30,000 churches (meaning 15,000 foster churches and 15,000 fostering churches) will enter into this relationship in 2021. Again, this trend portends well for the overall gospel witness of local congregations.

Sharing resources to support other churches is common in the OPC when it comes to church planting. Similar models could be easily adapted for this kind of foster situation.