Prophecy, therefore, independently of its fulfilment, affords a reason for Covenanting. Properly authenticated, it has the force of an important argument. Shown to be prophecy, both by the circumstances in which it was uttered, and by the fulfilment, it is manifestly conducive to the duty. The fulfilment of prophecy is a scriptural test of its truth; but manifestations made of Divine approbation to the prophet, even before what was uttered by him was fulfilled, also attest that such was of God. It is the prophecy, as authenticated by one or other, or both of these things, that gives encouragement to perform the service. Did God speak by his servants in order to inform men, that his name should be called upon, in vowing and swearing unto him? Then, because of such a peculiar manifestation of his will, the duty behoves to be performed. If the dictation of his will as a law in reference to the service had been sufficient, he would not otherwise have enjoined it. And if his will manifested in that manner confers obligation, does not the revelation of it, in the condescending, though glorious language of prophecy, as well as otherwise, bind to duty? Shall he use any means to make his pleasure known, of which men, by giving obedience, will not testify their approbation? Shall God speak, and yet men not respond?
Covenanting was predicted in prophecy in reference to Old Testament times. The prophecies under this head may be divided into those of the earlier prophets, and those of the later. The first class includes in it, those of Jacob and Moses, and others, who were employed to predict the future circumstances of Israel. Referring to the Church of God as a covenant society, in general they foretold that the exercise of Covenanting should be performed by its members. As an instance of explicit references made to the duty, we may advert to the blessing of Moses on the tribe of Levi. That prophecy, though not limited to the periods of the former dispensations, may be considered as specially including in it a prospective regard to every act of Covenanting, in which the Church and nation of Israel as such engaged after it was delivered. The predictions of the later prophets in regard to Covenanting in the former ages, were fulfilled, on the return of the Jews from Babylon. They were so explicit, and so soon fulfilled, as to afford most emphatically an exhibition of the will of God in regard to their object.
Covenanting was predicted in prophecy in reference to New Testament times. Both in the first and in the later ages, the performance of the duty in these ages was foretold. It was intimated when it was said concerning the Messiah, -- "Unto him shall the gathering of the people be." Many prophecies uttered concerning the restoration of Israel, refer to the present dispensation; and consequently, the predicted exercises of Covenanting which these contain, to it also belong. Corresponding to the prophetic intimation concerning a people who should be created to praise the Lord, is that of a new heavens and a new earth; both are to be fulfilled in gospel times, and by those who were to be created, engaging in the duty of taking hold on God's covenant. The Saviour was promised for a covenant of the people, and for a light of the Gentiles; and also that he might establish the earth, to cause to inherit the desolated heritages. The last of the Old Testament prophets, at the same time that he speaks of the covenant of the priesthood having been broken by the Jews, who were unbelievers, uttering the prediction, -- "My name shall be great among the Gentiles," pre-intimates that all the heathen nations shall use the name of God in vowing and swearing unto him. Early was uttered the prophecy, -- "God shall enlarge Japheth, and he shall dwell in the tents of Shem." An illustration of it is given in these words, -- "Is he the God of the Jews only? is he not also of the Gentiles? Yes, of the Gentiles also?" Its reference to Covenanting is therefore manifest. Many passages besides, from the Old Testament prophets, show that the Gentiles in their national capacities shall vow and swear to God. And in the book of Revelation, the same is foretold. Explicit predictions are made concerning the Egyptians vowing a vow and performing it, and concerning the Assyrians along with them and Israel being reckoned as the Lord's people, which fall to be fulfilled in the later times. And by the voice of prophecy we are assured, that by Covenanting, in the last days, Israel and Judah shall be gathered and united as the Lord's people. By the breaking of the staff "Beauty," a prophet was called to signify that the Lord's covenant with Israel was broken; and by the cutting of the other staff, "Bands," he was directed to show, that the brotherhood -- certainly one which had been professedly by covenant, between Judah and Israel should be broken. But even an earlier prophet, by the use of the corresponding emblems, -- of one stick for Judah and Israel his companions, and another for Ephraim and all the house of Israel his companions, in joining them into one stick, was commissioned to testify to their being joined to one another, in taking the Lord for their God, in the latter day. Referring to the words of sacred psalmody, -- "Therefore will I give thanks unto thee, O Lord, among the heathen, and sing praises unto thy name;" as prophetic, an apostle unfolds the exercise of Covenanting as incumbent till the latest times. Yea, as a fruit of the resurrection of the Lord Jesus, the service, in the loftiest terms, is foretold. "Thou hast ascended on high, thou hast led captivity captive: thou hast received gifts for men; yea, for the rebellious also, that the Lord God might dwell among them."
Hence, in conclusion. How important to attend to such prophetic intimations! They are the word of God. They were indeed addressed through men, but their origin is Divine. They are addressed to us. In times past God spake unto the Fathers by the prophets; he still speaks to us in his word. By the authority of the Lord Jesus, we are commanded to search the Scriptures; -- the Old Testament as dictated by his Spirit, and the New as also from Him. While we read his word, he speaks to us from heaven. Let us not be slow of heart to believe all that the prophets have written.
 Deut. xxxiii.8-10.
 Some of these are contained in Is. x.22; xxviii.15-22; Jer. l.5.
 Gen. xlix.10.
 See Jer. xxxi.31-34, and Heb. viii.8; Ezek. xxxiv.25; xxxvii.26; as instances.
 Ps. cii.18-22; Is. lxv.16, 17.
 Is. xlii.6; xlix.8.
 Mal. i.11.
 Gen. ix.27.
 Rom. iii.29.
 Ps. xxii.27; Is. lii.15; Zech. ii.14.
 Rev. xi.15; xv.4.
 Is. xix.18-25.
 Zech. xi.10, 14.
 Ezek. xxxvii.15-28.
 Ps. xviii.49.
 Ps. lxviii.18; see also Zech. ii.11.