“Selah” is a Hebrew word which means “to stop and listen” or “to pause and think”; a musical interlude or “to weigh or value something“. It is primarily found in the book of Psalms and Habakuk. It’s strategic placements in the Psalms indicate an emphasis on it’s repetitive phrases. Pauses in english grammar are denoted by the comma. Pauses emphasize and enrich. And pauses make a huge difference in narration.
So how do You, ‘stop and listen’ or ‘pause and think’?
Here is a resource to understanding ‘selah’ from the jewish encyclopedia.