Respectfully, 2 Thessalonians 2:13 says that the believer was chosen to salvation through two things...
Their being sanctified by the Spirit, and their belief of the truth ( which is
given to them in the behalf of Christ, see Philippians 1:29 ). It simply says that from the beginning ( when paul first preached to them ) That God has chosen by sanctification and believing the truth ( as opposed to another method ) that by this way just like Paul ( from the beginning told them , so they haven't missed the return of christ ) They have been ' chosen ' to service from when they believed by believing the truth.
Those two things are the result of the work of God ( John 6:29, Ephesians 2:10, Philippians 1:6, James 1:18 ), not a cooperative work between us and the Lord.
This is faulty reasoning . I do not believe we ' cooperative ' with God in salvation . Its God that is pleased by the foolishness of the preaching to save them that believe ( believing / faith is not a work)
Ephesians 1:4 says that they were chosen "in Him" from the foundation of the world.
We as God's elect were chosen to be placed within the body of Christ from the foundation of the world...
It was determined then, and carried out in real time within our lives.
Eph 1 .4 says we are chosen in him before the foundation of the world. Then when you ask your self when did you become in him that will answer how this text is to be read . Ask ' chosen for what ? So Jesus is the only one in this context who is preexisting . in no way does it say ' chosen to be in him '
Romans 8:28-30 states that only the foreknown will ever experience the benefits of being predestinated to be conformed to the image of His Son, being called by the Gospel, being justified and then being glorified.
So, unless one is foreknown by God, one cannot be part of the rest.
' foreknow is when God knows you in the sense of being in Him .
mathew 7 " depart from me I never knew you )
Only those given to Jesus Christ by the Father will come to Him ( John 6:39, John 6:65 ), and only those given to the Son by the Father will ever receive the gift of eternal life ( John 17:2 ). before the cross they can come by the drawing of the father . it doesnt say how or if all that were drawn , came either .
Therefore, unless one is chosen by God and caused to approach Him ( Psalms 65:4 ), then one is not blessed of God by His grace.
no one is ever ' caused to come to Jesus ' beyond revelation ( creation, conscience, bible, the Gospel . The Holy Spirit and Jesus being the light of the world and he draws all men in the sense above. Sin , righteousness and Judgement . Sin because they believe not .
They are still in their sins and awaiting His judgment.
To me, you're making a person's salvation dependent upon a combination of their own actions and God's, and then God predestinating them to all the rest.
I'm sorry, but I don't see this when I read the Scriptures.

Salvation is Gods sovereign free choice and that it pleases Him that by the foolishness of preaching to save them that BELIEVE . Faith is not a work according to Paul in the book of Roman's which is about salvation .
Also, the only Man I follow is Jesus Christ and him alone ( John 10:1-5, John 10:27 ).
I don't read the writings of prominent "Calvinists" in order to help me to understand the Scriptures, Barry.
I read His word, as it is all-sufficient for me and always will be.
If I run across something in His word that I do not understand, I ask Him to show me and He has never let me down...
The more I study, the more He shows me.
You are of course, under no compulsion to believe me... but calling me and others like me "Calvinists" is not accurate, as we do not follow John Calvin nor his writings.
We follow Jesus Christ, and always will.
I wish you well, sir, and may He bless you with many good gifts in the days to follow.