Chapter 3/4

The Captain blurts out a few things to Jim so it depends what specific section you mean. In chapter 3 Billy Bones tries to bribe Jim to bring him rum since he is suffering from alcohol withdrawal. Jim agrees to bring him just one drink and when he brings the alcohol to the captain, he tells Jim that within a week lubbers (sailors) will be looking for him, in order to give him the black spot and take his money.