Psalms 146-150 are all about praising God. We aren’t supposed to put our final trust in political authorities, we read ins 146: 3. We see especially that God cares about people who are suffering (Psalm 146: 7-9, 147: 3, etc.). God cares about the people of Jerusalem. In Galatians 4: 26, we see that we belong to the new Jerusalem (the redeemed in heaven). The psalmist is overflowing with praise. Some people take life for granted. Like the psalmist, it is good to be overflowing in praise.