35 These are the words of the Lord, who has given the sun for a light by day, ordering the moon and stars for a light by night, who puts the sea in motion, causing the thunder of its waves; the Lord of armies is his name. 36 If the order of these things before me is ever broken, says the Lord, then will the seed of Israel come to an end as a nation before me for ever. 37 This is what the Lord has said: If the heavens on high may be measured, and the bases of the earth searched out, then I will give up the seed of Israel, because of all they have done, says the Lord. 38 See, the days are coming, says the Lord, for the building of the Lord's town, from the tower of Hananel to the doorway of the angle. 39 And the measuring-line will go out in front of it as far as the hill Gareb, going round to Goah. 40 And all the valley of the dead bodies, and all the field of death as far as the stream Kidron, up to the angle of the horses' doorway to the east, will be holy to the Lord; it will not again be uprooted or overturned for ever.

Matthew Henry's Commentary on Jeremiah 31:35-40

Commentary on Jeremiah 31:35-40

(Read Jeremiah 31:35-40)

As surely as the heavenly bodies will continue their settled course, according to the will of their Creator, to the end of time, and as the raging sea obeys him, so surely will the Jews be continued a separate people. Words can scarcely set forth more strongly the restoration of Israel. The rebuilding of Jerusalem, and its enlargement and establishment, shall be an earnest of the great things God will do for the gospel church. The personal happiness of every true believer, as well as the future restoration of Israel, is secured by promise, covenant, and oath. This Divine love passes knowledge; and to those who take hold upon it, every present mercy is an earnest of salvation.