The word “Selah” occurs seventy-three times in the Psalms, and is found also in Hab 3:3,9,13. The exact meaning of the word is unknown, but it’s believed by many scholars to be a musical term that means to pause, or reflect. For example, in Psalm 32:5 we read:
“Then I acknowledged my sin to you and did not cover up my iniquity. I said, “I will confess my transgressions to the LORD”– and you forgave the guilt of my sin. Selah”
So when we see “Selah” it means we should pause and reflect on these words.