What is tom doing just before he hears old scratch knocking at the door?

Just before Tom hears Old Scratch knocking at the door, he is engaged in a moment of contemplation about his deal with the devil and the consequences of his choices. He reflects on his life and the wealth he has acquired, but there is an underlying sense of unease and dread about what is to come. This moment of introspection sets the stage for the impending confrontation with his fate.