Mark 14:72 - Ellicott's Commentary On The Whole Bible

When he thought thereon. — The Greek word is a somewhat peculiar one, and means literally “throwing at,” or “on.” The English version assumes that it means “casting his mind or thoughts,” just as “to reflect” is “to bend the mind,” and is probably right. The marginal readings give two conjectures. Yet another may be found in the idea that the word describes St. Peter’s action “casting himself down, he wept,” but there is not enough authority for any other interpretation to justify a change in the text.