What Actually Provokes a Loving Merciful God to Wrath and Judgement?

Deuteronomy 30: 19-20 I call heaven and earth as witnesses today against you, that I have set before you life and death, blessing and cursing; therefore choose life, that both you and your descendants may live; 20 that you may love the Lord your God, that you may obey His voice, and that you may cling to Him, for He is your life