I will be happy to show that this teaching about God's decree is FALSE DOCTRINE.
(a) What is a divine decree? According to the KJV dictionary it means "In theology, predetermined purpose of God; the purpose or determination of an immutable Being, whose plan of operations is, like himself, unchangeable."
(b) "All things, whatsoever comes to pass" includes all the sin, evil, and wickedness that takes place on earth, and has been taking place since the Fall.
(c) Therefore according to this teaching from the Westminster Confession of Faith (and notwithstanding their attempt to escape the plain meaning of their own statement by this weaseling-- "yet so as thereby is God neither the author of sin nor hath fellowship with any therein") God predetermined and purposed that (1) Adam and Eve would disobey Him, (2) Cain would murder Abel, (3) the whole world would become extremely wicked before the Flood (as just three examples).
Can any honest person agree to this nonsense, when the Bible tells us that God is Light, and in Him is no darkness at all and that He cannot even bear look upon evil? Yet, the Calvinists have tried to dodge and obfuscate their own false teaching here.
This is an attempt to bypass the Bible doctrine that "the elect" (according to Scripture, not according to Calvinism) were not known to God because of His foreknowledge, but because He predetermined to elect some for salvation and others for damnation (as we will note below).
However this is what we read in Scripture: Peter, an apostle of Jesus Christ, to the strangers scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia, Elect according to the foreknowledge of God the Father, through sanctification of the Spirit, unto obedience and sprinkling of the blood of Jesus Christ: Grace unto you, and peace, be multiplied. (1 Peter 1:1,2)
This Scripture is telling us that the Christians being addressed by Peter were elect or chosen according to God's foreknowledge. But what were they chosen for? Were they chosen for salvation or was it in order to be perfected into the image or likeness of Christ? The answer is also in Scripture: For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren. (Rom 8:29)
These Scripture are plainly telling us that God predestined the ones who would be saved ("whom He justified") to be conformed to the image of Christ ("them He also glorified"). That is what glorification is all about: Moreover whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified. (Rom 8:30)
This is telling us that God has predestined or foreordained some for eternal life (salvation). While Calvinists deny double-predestination, the plain fact is that if God chooses some for salvation, then He also chooses many for damnation. THIS IS PATENTLY FALSE as we can see from Scripture that God desires the salvation of ALL MANKIND. Here are some of the Scriptures:
Look unto me, and be ye saved, all the ends of the earth: for I am God, and there is none else. (Isa 43:22)
The next day John seeth Jesus coming unto him, and saith, Behold the Lamb of God, which taketh away the sin of the world. (Jn 1:29)
For God sent not his Son into the world to condemn the world; but that the world through him might be saved. (Jn 3:17)
And said unto the woman, Now we believe, not because of thy saying: for we have heard him ourselves, and know that this is indeed the Christ, the Saviour of the world. (Jn 4:42)
For the bread of God is he which cometh down from heaven, and giveth life unto the world... This is the bread which cometh down from heaven, that a man may eat thereof, and not die. I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world. (Jn 6:33,50,51)
And the times of this ignorance God winked at; but now commandeth all men every where to repent: (Acts 17:30)
For this is good and acceptable in the sight of God our Saviour; Who will have all men to be saved, and to come unto the knowledge of the truth. For there is one God, and one mediator between God and men, the man Christ Jesus; Who gave himself a ransom for all, to be testified in due time. (1 Tim 2:3-6)
But we see Jesus, who was made a little lower than the angels for the suffering of death, crowned with glory and honour; that he by the grace of God should taste death for every man. (Heb 2:9)
The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance. (2 Pet 3:9)
And the Spirit and the bride say, Come. And let him that heareth say, Come. And let him that is athirst come. And whosoever will, let him take the water of life freely. (Rev 22:17)
There is no need to discuss the rest of that post.