Here is a hard line stance;
RPCUS Distinctives and the Westminster Standards
Some might say that the RPCUS’ postmillennial position is too dogmatic and too narrow in denying amillennialists entrance into the denomination. Yet, the distinguishing mark of postmillennial eschatology is central. It believes in the victory of the gospel in space and time during the present millennial age. The Great Commission of Christ in Matthew 28:18-20 will be accomplished in history prior to Christ’s Second Coming. The knowledge of the glory of the Lord will cover the earth as the waters cover the sea as promised in Isaiah 11:9 and in Habakkuk 2:14. King Jesus will take possession of His inheritance as was promised Him by the Father in Psalm 2:7,8. Verse 8 says, “Ask of Me and I will surely give the nations as Thine inheritance, and the very ends of the earth as Thy possession.” From His ascended throne in heaven, King Jesus exercises His kingly reign by subduing His enemies, making them a footstool for His feet just as Hebrews 10:12,13 says, “but He, having offered one sacrifice for sins for all time, sat down at the right hand of God, waiting from that time onward until His enemies be made a footstool for His feet.”
The postmillennialist asks every amillennialist, “How can a sovereign God, who has foreordained the end from the beginning and who has all power, ever lose?” The Great Commission is not the foreordination of defeat but of victory. This optimism is seen in the Larger Catechism question and answer # 54, “How is Christ exalted in his sitting at the right hand of God?” Part of the answer states, “Christ…doth gather and defend his church, and subdue their enemies;…” Shorter Catechism question # 26 asks, “How does Christ execute the office of a king?” The answer is: “Christ executeth the office of a king, in subduing us to himself, in ruling and defending us, and in restraining and conquering all his and our enemies.” One of the proof texts given by the Westminster delegates on this question and answer is Psalm 110 and I Corinthians 15:25. The Corinthian passage says, “For he must reign, till he hath put all enemies under his feet.”
Larger Catechism question # 191 states, “What do we pray for in the second petition?” The answer is: “In the second petition, (which is, Thy kingdom come,) acknowledging ourselves and all mankind to be by nature under the dominion of sin and Satan, we pray, that the kingdom of sin and Satan may be destroyed, the gospel propagated throughout the world, the Jews called, the fulness of the Gentiles brought in, the church furnished with gospel officers and ordinances, purged from corruption,…”
This portion of the Lord’s prayer is unquestionably postmillennial. A prayer for the kingdom of sin and Satan to be destroyed is a prayer for the victory of the gospel in the millennial age. Since the first promise of the Messiah in Genesis 3:15, there has been enmity between the seed of the woman and the seed of the serpent. We know the seed of the woman (Christ and His seed, i.e., his people) shall have ultimate victory over the seed of the serpent (Satan and His seed, i.e., his followers). We know that the woman’s seed is the church of Christ, all the elect of God, and the serpent’s seed is all the reprobate, the children of the Devil. In Genesis 22:17 we have the promise that Abraham’s seed will possess the gates of their enemies. Galatians 3:29 identifies the church as the seed of Abraham. To possess an enemy’s gate is to conquer one’s enemy. In Matthew 16:18, Jesus promised His church that the gates of Hell would not be able to withstand the assault of the church. From II Corinthians 10:3-5 we learn that the church has divinely empowered spiritual weapons for the destruction of fortresses. The church destroys ungodly speculations and brings all thoughts captive to Christ’s obedience. We know that Jesus’ millennial reign shall be victorious as noted by Psalm 2; Psalm 110; I Corinthians 15:20-28; Hebrews 10:12,13; and Ephesians 1:20-23. Since prayer is a means ordained by God to bring about His sovereign decrees, would God have us pray for something that He does not intend to accomplish? Of course not!
When we are commanded to pray that the gospel be propagated throughout the world, we are praying that the gospel accomplish its intended purpose – that of the Christianization of the world’s nations. This is the promise of the Great Commission in Matthew 28:18-20. In verse 18 Jesus said that he possessed all authority in heaven and earth. In light of this fact, Jesus commanded His church to go and make disciples of the world’s nations. Since Jesus said that he would be with the church to the end of the world, this means that His sovereign power would always be energizing His church to fulfill her task.
The prayer for the Jews to be called to Christ is a fulfillment of what was promised in Romans 11:26 that all ethnic Israel would be saved, that she, the natural branch, would be grafted back onto the tree. The prayer that the fullness of the Gentiles be brought in is a prayer for the Christianization of the world in accord with Matthew 28:18-20 and what was promised in Psalm 22:27,28 that all the families of the nations will worship God. It is also a prayer for the fulfillment of the promise in Isaiah 2:2-4 that the peoples of the earth will stream to the mountain of the house of the Lord to learn the ways of Jehovah, and the nations will beat their weapons of war into tools of productivity to the glory of God.
The Westminster Standards are postmillennial. What the RPCUS wants to hear from its candidates is that they believe in the success of the gospel during the millennial age before the Second Coming of Christ.