Reasoned within himself (διελογιζετο εν αυτω). Imperfect middle, picturing his continued cogitations over his perplexity.

Where to bestow (που συναξω). Future indicative deliberative, where I shall gather together.

My fruits (τους καρπους μου). So it is with the rich fool: my fruits, my barns, my corn, my goods, just like Nabal whose very name means fool (1. Samuel 25:11), whether a direct reference to him or not.