God can get angry and this doesn't mean that He stopped being God for the moment that he is angry. God's wrath is Holy and Righteousness because it only shows up when sins like rebellion, gossip, envy, lust and love for money, irreverence, disloyalty and betrayal come to divide the body of Christ. Isaiah 59:2 says "your iniquities have separated you from your God". Sin separates us from God. Whatever sin we commit, it will end to separate us and divide us.

You will see the sinful people separating themselves from church. They will tell you that the men of God are satanist. The truth is that the sinful person can't stand in the presence of God and they always find an excuse to not coming to church. But, the truth is that satan keeps them ignorant about this verse.

God loves us. His anger lasts just seconds and at the very moment that we repent, Jesus's sacrifice spares us from the consequences. God's anger is triggered by sins. When you sin, you tell God "you don't care about Jesus". Be careful about grace.