The Supreme End of all the Decrees is doubtlessly the Glory of God: who, being Independent in all respects, makes all things for Himself, Proverbs 16:4; not as needing them, but to reveal to His creatures through the communication of Himself the abundance of His Goodness, and other Perfections, to be acknowledged and praised by rational creatures. And thus God intends an End in acting, thus in decreeing; but in a manner altogether alien, and surpassing our capacity (who also act for the sake of an End, but out of neediness and dependently on the motion of the End): compare above, § 7.
But the Subordinate End is the Salvation of the Elect, in which the Demonstration and Recognition of divine Glory principally obtains; whence to this all the Works of God, and so the Decrees also, are said to be ordered, Romans 8:28; 2 Peter 3:9; 1 Corinthians 3:22.
Study the Divine Decree with De Moor! https://www.fromreformationtoreformation.com/blog/categories/de-moor-on-the-decree