Psalm 89:1 is both a declaration AND an instruction!
1 I will sing of the mercy and loving-kindness of the Lord forever; with my mouth will I make known Your faithfulness from generation to generation.
We should be singing His praise continually because of the wonderful Covenant we have with Him, through what Jesus did for us! Some people will not know until YOU tell them! When we praise Him for Who He is, as in verse 8 and beyond.....
8 O Lord God of hosts, who is a mighty one like unto You, O Lord? And Your faithfulness is round about You [an essential part of You at all times].
.... then all of the glory, and the attention, goes to Him! After all, He IS worthy to be praised! Amen! Here is Hillsong with "I Desire Jesus":
Shalom in Him!