1. The length and breadth of the mercy-seat is the same with that of the ark: perhaps to show us, that the length and breadth of the mercy of God to his elect, is the same with the length and breadth of the merits of Christ (Exo 25:10,17). Therefore, we are said to be justified in him, blessed in him, even according to the purpose which God purposed in him.
2. But in that the mercy-seat is without measure, as to height, it is to show, that would God extend it, it is able to reach even them that fall from heaven, and to save all that ever lived on earth, even all that are now in hell. For there is not only breadth enough for them that shall be saved, but 'bread enough and to spare' (Luke 15:17). 'And thou shalt,' says God, 'put the mercy-seat above upon the ark.' Thus he said to Moses, and this was the place which David assigned for it (Exo 25:21; 1 Chron 28:11). Now, its being by God's ordinance placed thus, doth teach us many things.
(1.) That mercy's foundation to us is Christ. The mercy-seat was set upon the ark of the testimony, and there it rested to usward. Justice would not, could not have suffered us to have had any benefit by mercy, had it not found an ark, a Christ to rest upon. 'Deliver him,' saith God, 'from going down to the pit, I have found a ransom' (Job 33:24).
(2.) In that it was placed above, it doth show also that Christ was, of mercies, ordaining a fruit of mercy. Mercy is above, is the ordainer; God is love, and sent of love his Son to be the Saviour and propitiation for our sins (John 3:16; 1 John 4:10).
(3.) In that the mercy-seat and ark were thus joined together, it also shows, that without Christ mercy doth not act. Hence, when the priest came of old to God for mercy, he did use to come into the holy place with blood; yea, and did use to sprinkle it upon the mercy-seat, and before it, seven times. Take away the ark, and the mercy-seat will fall, or come greatly down at least. So take away Christ, and the flood-gate of mercy is let down, and the current of mercy stopped. This is true, for so soon as Christ shall leave off to mediate, will come the eternal judgment.
(4.) Again, in that the mercy-seat was set above upon the ark, it teacheth us to know, that mercy can look down from heaven, though the law stand by and looks on; but then it must be in Christ, as kept there, and fulfilled by him for us. The law out of Christ is terrible as a lion; the law in him is meek as a lamb. The reason is, for that it finds in him enough to answer for all their faults, that come to God for mercy by him. 'Christ is the end of the law for righteousness'; and if that be true, the law for that can look no further upon whoever comes to God by him. The law did use to sentence terribly, until it was put into the ark to be kept.[30]
(5.) Let them then that come to God for mercy be sure to come to him by the ark, Christ. For grace, as it descends to us from above the mercy-seat, so that mercy-seat doth rest upon the ark. Wherefore, sinner, come thou for mercy that way: for there if thou meetest with the law, it can do thee no harm; nor can mercy, shouldst thou elsewhere meet it, do thee good. Come, therefore, and come boldly to the throne of grace, this mercy-seat, thus borne up by the ark, and 'obtain mercy, and find grace to help in time of need' (Heb 4:16).
Wherefore the thus placing of things in the holiest, is admirable to behold in the word of God. For that indeed is the glass by and through which we must behold this glory of the Lord. Here we see the reason of things; here we see how a just God can have to do, and that in a way of mercy, with one that has sinned against him. It is because the law has been kept by the Lord Jesus Christ; for as you see, the mercy-seat stands upon the ark of the covenant, and there God acts in a way of grace towards us (Exo 25:17-23).
LXIV. Of the living waters of the inner Temple.
Although in the holy relation of the building of the temple no mention is made of these waters, but only of the mount on which, and the materials with which the king did build it, yet it seems to me that in that mount, and there too where the temple was built, there was a spring of living water. This seems more than probable, by Ezekiel 47:1, where he saith, 'He brought me again unto the door of the house, and behold, waters issued out from under the threshold of the house eastward, for the fore-front of the house stood toward the east, and the waters came down from under, from the right side of the house, at the south side of the altar.' So again, 'And a fountain shall come forth of the house of the Lord, and shall water the valley of Shittim' (Joel 3:18). Nor was the spring, wherever was the first appearance of thess holy waters, but in the sanctuary, which is the holiest of all (Eke 47:12), where the mercy-seat stood, which in Revelation is called 'The throne of God, and of the Lamb' (Rev 22:1,2).