Knowing (foreknowing) the future is not the same as determining the future.
Most people, including myself, could say with great certainly that the sun will rise tomorrow. However, in no way could anyone logically, or reasonably conclude that I am determining, ( being the cause of) the future. My "foreknowledge of sun rising tomorrow does not force the sun to rise tomorrow. The only future I can determine is the actions that I take. If believe a promise of God, God guarantees that He will fulfill that promise. That is if I meet the prerequisite conditions that God set up, God promise He will do His part.
Several examples of His promises, the prerequisites and the promised results should be evident, even to the casual reader.
Romans 10:9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved
Proverbs 3:
5 Trust in the Lord with all thine heart; and lean not unto thine own understanding.
6 In all thy ways acknowledge him, and he shall direct thy paths.
9 Honour the Lord with thy substance, and with the firstfruits of all thine increase:
10 So shall thy barns be filled with plenty, and thy presses shall burst out with new wine.
Psalm 1:
1 Blessed is the man that walketh not in the counsel of the ungodly, nor standeth in the way of sinners, nor sitteth in the seat of the scornful.
2 But his delight is in the law of the Lord; and in his law doth he meditate day and night.
3 And he shall be like a tree planted by the rivers of water, that bringeth forth his fruit in his season; his leaf also shall not wither; and whatsoever he doeth shall prosper.
Anyone who fulfills the prerequisites shall receive the "advertised" promise