“Oh sing to the LORD a new song; sing to the LORD, all the earth!”
A new song is born when there's a fresh reason to sing — God keeps acting, so worship never has to go stale.
The invitation isn't limited to one people — 'all the earth' is called to join this song, without exception.
The command is repeated twice in the same line — singing to the Lord isn't an optional suggestion, it's the expected response.
If God's mercies are new every morning, there's always fresh material for a song that hasn't been sung yet.
This psalm soon declares, 'the Lord reigns' — the new song celebrates that He is still on the throne, today as always.
Act: Sing or speak aloud one fresh sentence of thanks today for something God has done recently, even something small.