How easy it is to work for God when we are filled with His Spirit! His service is so sweet, so delightful; He is not a hard master. People talk about their being overworked and breaking down. It is not so. It is [over-worry] and care that wears people out.
Why do so many workers break down? Not from overwork, but because there has been friction of the machinery; there hasn't been enough of the oil of the Spirit. Great engines have their machinery so arranged that where there is friction there is oil dropping on it all the time. It is a good thing for Christians to have plenty of oil.