Calvinists get all excited about Romans 29-20
29 For those whom He foreknew, He also predestined to become conformed to the image of His Son, so that He would be the firstborn among many brethren; 30 and these whom He predestined, He also called; and these whom He called, He also justified; and these whom He justified, He also glorified.
I know this is their wet-dream, but if only with the tendentious Calvinistic verse-picking at work.
Even while he tends to Arminianism, Clarke's commentary on this segment is more to the fact of the matter. I also read it with a Molinist tinge, but I nevertheless don't think 'Middle Knowledge" is either necessary or helpful as it seeks too much without providing enough.
God knew there would be those who had faith in Christ.
Because God is creator and made us in his image he knows what humans are like and capable of (although child sacrifice took him by surprise: Jeremiah 19:5) and the range of their dispositions and inclinations. The range of human thought, capability and motivations is for God is finite and tiny. We can present to God no conundrum.
We are constrained by the reality we are in, so God has no need of meticulous or even particular 'foreknowledge'. In whatever combination of options available to any person and between all persons no impediment can be given to God's achieving his objective. He doesn't need to 'look into the future' because for God's no-limit-ness the finite (but very large to us) set of possible outcomes for humanity are trivially differentiated for God. Also the challenge range in the set is always within God's much larger capability range with respect to Romans 8:28.
That said, back to Romans 8
For that he knew there would be people who would become faithful to Christ
The destination of those people he established was that they will be conformed to Christ and so in the New Creation and in my family.
How I will do that? I will have invited who those who are faithful and will justify and glorify them. So all who turn to me will have been those I've invited...but not all invited will necessarily accept the invitation, of course...I know people!
Ephesians 1:13
This is the true order of salvation (what theologians like to latinize to impress as Ordo salutis). Note, the 'in Him' is the theme of this pericope: all of it is about the result of being 'in Christ'.
13 In Him, you also, after listening to the message of truth, the gospel of your salvation—having also believed, you were sealed in Him with the Holy Spirit of promise...
