Psalm 16:8-11 (King James Version)
8 I have set the Lord always before me: because he is at my right hand, I shall not be moved. 9 Therefore my heart is glad, and my glory rejoiceth: my flesh also shall rest  in hope. 10 For thou wilt not leave my soul in hell; neither wilt thou suffer thine Holy One to see corruption. 11 Thou wilt shew me the path of life: in thy presence is fulness of joy; at thy right hand there are pleasures for evermore.
16:9 rest...: Heb. dwell confidently