If I have a faith that can move mountains, but have not love, I am nothing...(1 Cor. 13:2b)

It is the special gift whereby the Spirit empowers certain Christians to identify unmet needs of people and implement plans to meet those needs. Serving one another, like witnessing, is a calling of all Christians, but there are some who have a special desire to find ways to serve, and get great blessing from it. There seems to be a special desire to meet physical needs in the people who have this gift.

See Galatians 6:1-2.