Paul, Silvanus, and Timothy, to the assembly of the Thessalonians in God the Father and the Lord Jesus Christ: Grace to you and peace from God our Father and the Lord Jesus Christ.
So the scripture does teach divine election. It never teaches divine election apart from the foreknowledge of God. Whom He did foreknow, He did also predestinate, that they shall be conformed in the image of His Son. And so Paul taught the doctrine of divine election to the church in just a month's time.