Selah

“Some think that this word is quite superfluous in the psalms. Its real meaning is still obscure. I believe that this word is a punctuation mark of the Holy Spirit. Wherever we find it in the Psalter, the Holy Spirit wants us to pause and ponder; there He wants to touch and enkindle our heart for particularly deep meditation. But this I am willing to leave to everyone’s own judgment and opinion. “ - Martin Luther, commentary on select Psalms.