Monergism

God from all eternity, did, by the most wise and holy counsel of His own will, freely, and unchangeably ordain whatsoever comes to pass yet so, as thereby neither is God the author of sin, nor is violence offered to the will of the creatures; nor is the liberty or contingency of second causes taken away, but rather established.
Westminster Larger Catechism Q3

God did not simply decree to save sinners without determining the means to effectuate the decree. The means leading to the predetermined end were also decreed (Acts 2:23; Eph. 2:8; 1 Pet. 1:2). The absolute character of the decree follows from its eternity, its immutability, and its exclusive dependence on the good pleasure of God. It is denied by all Semi-Pelagians and Arminians.
Louis Berkhof Systematic Theology pg. 105

God "works all things after the counsel of his will" (Ephesians 1:11). This "all things" includes the fall of sparrows (Matthew 10:29), the rolling of dice (Proverbs 16:33), the slaughter of his people (Psalm 44:11), the decisions of kings (Proverbs 21:1), the failing of sight (Exodus 4:11), the sickness of children (2 Samuel 12:15), the loss and gain of money (1 Samuel 2:7), the suffering of saints (1 Peter 4:19), the completion of travel plans (James 4:15), the persecution of Christians (Hebrews 12:4-7), the repentance of souls (2 Timothy 2:25), the gift of faith (Philippians 1:29), the pursuit of holiness (Philippians 3:12-13), the growth of believers (Hebrews 6:3), the giving of life and the taking in death (1 Samuel 2:6), and the crucifixion of his Son (Acts 4:27-28).
John Piper