On chapter 15 What does Father Vincent tell Kumalo to go and do?

Basically pray and rest,

Father Vincent, the white priest at Mission House, tells Stephen Kumalo that his anxiety has turned to fear and his fear into sorrow, but this sorrow is better than fear, for sorrow may enrich while fear always impoverishes. Kumalo cannot see how such a life can be amended, but Father Vincent says that he is a Christian and there was a thief upon the cross. Kumalo harshly says that his son was not a thief, and he cannot suppose it to be less than the greatest evil he has ever known. Father Vincent tells Kumalo to pray and rest.