How can a poor tree bear good fruit? Only by grafting… We cannot tell how God has done his work in us, but it is done. We can do nothing and need do nothing to bring it about, for by the resurrection God has already done it. God has done everything. There is only one fruitful life in the world and that has been grafted into millions of other lives.
The Normal Christian Life, Tyndale House 1957/1977, 97-8