Louis Berkhof, Summary of Christian Doctrine, Part II: The Doctrine of God and Creation, Chapter VIII: The Divine Decree
The decree of God is founded in wisdom, Eph. 3:9-11, though we do not always understand it. It was formed in the depths of eternity, and is therefore eternal in the strictest sense of the word, Eph. 3:11. Moreover, it is effectual, so that everything that is included in it certainly comes to pass, Isa. 46:10. The plan of God is also unchangeable, because He is faithful and true, Job 28:13, 14; Isa. 46:10; Luke 22:22. It is unconditional, that is, its execution does not depend on any action of man but even renders such action certain, Acts 2:23; Eph. 2:8. Moreover, it is all-inclusive, embracing the good and the wicked actions of men, Eph. 2:10; Acts 2:28, contingent events, Gen. 50:20, the duration of man’s life, Job 14:5; Ps. 39:4, and the place of his habitation, Acts 17:26. With respect to sin it is permissive.
Louis Berkhof, Summary of Christian Doctrine, Part II: The Doctrine of God and Creation, Chapter VIII: The Divine Decrees.