The Psalms teach us how to worship the Almighty God. The Psalms contain the most beautiful words on the glory of God.
Psalms is one of the most frequently quoted OT books in NT. The other being Isaiah
The Psalms contain prophesies about our Lord Jesus Christ.
The Lord Jesus told the disciples on the road to Emmaus that the Psalms prophesied about Him
Now He said to them, “These are My words which I spoke to you while I was still with you, that all things which are written about Me in the Law of Moses and the Prophets and the Psalms must be fulfilled.” (Luke 24:44)
The Lord Jesus cited Psalm 110 when debated with the Pharisees
‘The Lord said to my Lord,”Sit at my right hand,Until I put Your enemies beneath Your feet”‘? (Matt 24:43-44)
The Lord Jesus uttered the beginning words of Psalm 22 from the cross:
About the ninth hour Jesus cried out with a loud voice, saying, “ELI, ELI, LAMA SABACHTHANI?” that is, “MY GOD, MY GOD, WHY HAVE YOU FORSAKEN ME?” (Matt 27:46).
The apostles quote Psalms when they preached:
Peter’s message: Acts 2:24-36
Paul’s message: Acts 13:29-39
The Psalms have a prominent role in the history of the church through the ages. Many teachers in the church wrote about and quoted Psalm, including Augustine, Martin Luther, etc.
The Psalms are songs. Ephesians 5:19, Colossians 3:16 and 1 Corinthians 14:26 informed us that singing are important part of corporate worship.
The Psalms are filled with human expressions in all areas of life. We can often identify ourselves with the writer when reading Psalms.