And the vineyard which... — Most modern scholars follow the LXX. and Vulg. in making the word rendered vineyard an imperative of a verb, meaning protect: And protect what thy right hand hath planted. This makes a good parallelism.
Related Commentaries of Psalms 80:15
Psalms 80:15
15 And the vineyard which thy right hand hath planted, and the branch that thou madest strong for thyself.