The right hand of the LORD is exalted: the right hand of the LORD doeth valiantly.
The right hand of the Lord is exalted. Exodus 15:6 confirms the English version, "is exalted," in preference to 'exalts' (Hengstenberg, quoting Psalms 37:34).
The right hand of the Lord doeth valiantly - This second clause is the result of the first.