Nevertheless Saul didn't say anything that day: for he thought, Something has happened to him. He is not clean. Surely he is not clean.
he [is] not clean, surely he [is] not clean; which he repeated in his mind for the confirmation of it, and in contempt, and to the reproach of David; and in this way he accounted for his absence the first day, and so was easy, it not being lawful and fitting for an unclean person in a ceremonial sense to eat of the peace offerings, which Saul and his family were now partaking of.