Some times people claim that the God of the Old Testament seems so much angrier than the God we see in the New Testament, reflected in the man Jesus. But the God of the Old Testament is the same God that is incarnated in the New Testament. God never changes.
In this episode, Kenny explains how God has always been loving and kind and gracious and merciful, and that God has also always hated sin; God demands that sin be atoned for and that justice be served. God has always loved human beings, and yet God has always hated the sinful choices committed by human beings.
The God of both Testaments (Old and New) is the same God, filled with desire to glory Himself through demonstrating His kindness to us, while simultaneously being filled with the desire to glory Himself through the justice that we see when sin is thoroughly punished. That is why the cross took place. The cross is where both the kindness of God and the justice of God are fully on display.
Sometimes people believe that God was angrier in the Old Testament than He was in the New Testament, but that is simply a flawed perspective that must be challenged and corrected.