George Leo Haydock, on Gen 17:19

“And God said to Abraham: Sara thy wife shall bear thee a son, and thou shalt call his name Isaac, and I will establish my covenant with him for a perpetual covenant, and with his seed after him.”

“Isaac, “laughter,” alluding to the exultation of Abraham, more than to the laughter of Sara, which deserved some reprehension, chap. xxi. 6.”

Imported from an open dataset — not yet checked against the printed edition.