Psalm 42:5 Meaning

3My tears have been my meat day and night, while they continually say unto me, Where is thy God?

4When I remember these things, I pour out my soul in me: for I had gone with the multitude, I went with them to the house of God, with the voice of joy and praise, with a multitude that kept holyday.

5Why art thou cast down, O my soul? and why art thou disquieted in me? hope thou in God: for I shall yet praise him for the help of his countenance.

6O my God, my soul is cast down within me: therefore will I remember thee from the land of Jordan, and of the Hermonites, from the hill Mizar.

7Deep calleth unto deep at the noise of thy waterspouts: all thy waves and thy billows are gone over me.