1. God Created all Things for Himself, for His own Purposes and this includes sin!
Isa. 45:7 "I form the light and create darkness: I make peace and create evil: I the Lord do all these things" Acts 17: 24 "God...made the world and all things therein" This includes sin. Col. 1: 13-16 "His dear Son...who is the image of the invisible God...for by Him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by Him and for Him." Heb. 3: 4 "He that built all things is God." Heb. 11: 3 "Through Faith we understand that the worlds were framed by the word of God." Prov. 16: 4 "The Lord hath made all things for Himself"
2. The foundation of Predestination is the Omnipotence of God. Isa. 40: 26 "Lift up your eyes on high, and behold who hath created these things, that bringeth out their host by number; he calleth them all by names by the greatness of His might, for that he is strong in power; not one faileth" Rev. 4: 11 "Thou art worthy, O Lord, to recieve glory and honor and power: for thou hast created all things, and for Thy pleasure they are and were created." Gen 17: 1 "I am the Almighty God" Gen. 28: 3 "God Amighty" Ex. 6: 3 "God Almighty" Ruth 1: 20-21 "The Almighty" Job 40: 2 "The Lord answered Job and said, Shall he that contendeth with the Almighty instruct him?" Rev. 1: 8 "I am Alpha and Omega...saith the Lord, which is, and was, and which is to come, The Almighty" Rev. 4: 8; Rev. 11:17; Rev. 15: 3; Rev. 16: 7; Rev. 16: 21-22 "The Lord God Almighty" Rev. 19: 6 "The Lord God Omnipotent reigneth"