Their heart is covered with fat, but I delight in Your law.
The previous verse described the psalmist’s enemies as the arrogant who speak lies against him. This verse further describes these enemies as those with hearts that are “covered with fat.” The idea in the Hebrew is that their hearts are dull and insensitive. The fact that they are telling lies about the psalmist does not bother them at all.
Paul reminds us that there will always be those who are enemies of the cross. They are liars who no longer have sensitive consciences.
Now the Spirit expressly says that in later times some will renounce the faith by paying attention to deceitful spirits and teachings of demons, through the hypocrisy of liars whose consciences are seared with a hot iron.
1 Timothy 4:1–2
This means that, if you are a Christian, you will face similar opposition. In light of this, Christians also need to learn how the psalmist responded to such opposition. He simply states that he delights in God’s law. The contrast is clear. When he was opposed by hard-hearted, wicked people who had no regard for the truth, he responded with a sensitive heart and a delight in the law of God.
Opposition can often bring out the worst in people, even Christians. It is so easy to get our feelings hurt and respond with anger, frustration, and even hatred. As Christians, we should not be surprised when wicked people express their disdain for us. Instead, we ought to be quick to set our minds on God’s word. Rather than struggling with emotions that dishonor the Lord, we should have delight in our hearts because of God’s word.