my mountain: i.e. Zion, which David had but recently taken (2 Samuel 5:7-10).
hide Thy face. Probably refers to. sickness which followed.
face. Figure of speech Anthropopatheia. App-6.
Related Commentaries of Psalms 30:7
Psalms 30:7
7 LORD, by thy favour thou hast made my mountain to stand strong: thou didst hide thy face, and I was troubled.