“I will abundantly bless her provision; I will satisfy her poor with bread. I will also clothe her priests with salvation, And her saints shall shout aloud for joy. There I will make the horn of David grow; I will prepare a lamp for My Anointed. His enemies I will clothe with shame, But upon Himself His crown shall flourish.””
Psalms 132:15-18 NKJV
The Psalmist is writing about Zion, but this is a physical place from hence Christ came and will return to again. When they refer to priests being clothed with salvation, I believe that refers to all of us who are saved by the Blood of Christ.