The novelty of Jeremiah's teaching is that these principles are made central in the New Covenant. Even Deuteronomy, which approaches so closely to the teaching of Jeremiah, was a new edition of the Covenant of the Exodus, an attempt to secure a righteous life by exhaustive rules and by external sanctions. Jeremiah had witnessed and probably assisted the effort to reform Judah by the enforcement of the Deuteronomic Code. But when Josiah's religious policy collapsed after his defeat and death at Megiddo, Jeremiah lost faith in elaborate codes, and turned from the letter to the spirit.
The next feature of the New Covenant naturally follows from its being written upon men's hearts by the finger of Jehovah:—
"Men shall no longer teach one another and teach each other, saying, Know ye Jehovah!
For all shall know Me, from the least to the greatest—it is the utterance of Jehovah."
In ancient times men could only "know Jehovah" and ascertain His will by resorting to some sanctuary, where the priests preserved and transmitted the sacred tradition and delivered the Divine oracles. Written codes scarcely altered the situation; copies would be few and far between, and still mostly in the custody of the priests. Whatever drawbacks arise from attaching supreme religious authority to a printed book were multiplied a thousandfold when codes could only be copied. But, in the New Israel, men's spiritual life would not be at the mercy of pen, ink, and paper, of scribe and priest. The man who had a book and could read would no longer be able, with the self-importance of exclusive knowledge, to bid his less fortunate brethren to know Jehovah. He Himself would be the one teacher, and His instruction would fall, like the sunshine and the rain, upon all hearts alike.
And yet again Israel is assured that past sin shall not hinder the fulfilment of this glorious vision:—
"For I will forgive their iniquity, and their sin will I remember no more."
Recurring to the general topic of the Restoration of Israel, the prophet affixes the double seal of two solemn Divine asseverations. Of old, Jehovah had promised Noah: "While the earth remaineth, seedtime and harvest, cold and heat, summer and winter, day and night, shall not cease."[440] Now He promises that while sun and moon and stars and sea continue in their appointed order, Israel shall not cease from being a nation. And, again, Jehovah will not cast off Israel on account of its sin till the height of heaven can be measured and the foundations of the earth searched out.[441]