God, not being a bloodthirsty God, did not require or desire the sacrifice of his Son to himself. Nor was it an offering to ‘pay’ the devil in order to ‘buy’ man’s freedom, since nothing was owed to the devil. But the empirical result of Christ’s death was the destruction of sin, the destruction of him who had the power of death (the devil) and the destruction of death. The death of the sinless one and his resurrection had these results.
— Summarised/paraphrased from St. Gregory of Nazianzus (329-390), Archbishop of Constantinople, also called Gregory the Theologian