What we cannot sufficiently admire in a man of so great learning, and so much business as Grotius, is, that he should make the Holy Scriptures his favourite study in every period of his life. They were his consolation in prison; he always devoted a part of the day to them: and they were his principal study during a great part of his embassy. His _Commentary on the Evangelists_ was finished in 1637; but before he printed it[508], he wanted to see the _Aristarchus Sacer_ which Heinsius was going to put to press. This was a Commentary on the New Testament, which Grotius imagined to be much in the manner of his, and which piqued his curiosity the more as Heinsius was Grotius's rival in literature, and his secret enemy. Heinsius's credit with the Elzevirs, who were his booksellers[509], was one of the reasons which hindered Grotius from employing them. "We must not think of the Elzevirs, he writes in confidence to Vossius[510], on account of that man who has so much credit with them, and bears us ill-will. I should be glad to know whereabouts are his notes on the sacred books, and when they will be published, for I postpone till then the revisal of mine." There was at that time in Holland a Jew very famous for his learning, Manassah Ben-Israel. Grotius consulted him sometimes, and always with profit. In a letter to him without date he tells him, "The answer you have given to my difficulties about some places of the law of Moses and the historical books of Scripture, has yielded me great pleasure; and I do not think any one would have given an answer more solid. I have read many Interpreters; but I see that you know them better than I, and that you have read many more, and are master of them. I return you therefore my sincere thanks; and encouraged by this favour shall take the liberty to apply to you when I have any difficulty, being ever ready to return you the like, when it lies in my power. Your books, which I have mentioned to several persons here, are read with pleasure and profit: I would therefore beg and conjure you to employ the leisure you may have in explaining the obscurities of the Law, which will be a signal service to all men of learning." This was not a compliment void of truth, but his real sentiment of this learned Jew: he speaks in the same manner in a private letter to Gerard Vossius[511]. "I have written again, he says, to Manassah, and beg of you to deliver to him my letter. I esteem very highly not only his erudition, but also his judgment. He treads successfully in the steps of Abenezra, Maimonides, and Abrabanel. I have made his works known here, and they are much read and valued."