For the sin of their mouth ... - That is, in belching out words of reproach and malice, Psalms 59:7.
Let them even be taken in their pride - In the very midst of their schemes, or while confidently relying on the success of their plans. Even while their hearts are elated, and they are sure of success, let them be arrested, and let their plans be foiled.
And for cursing and lying which they speak - That is, on account of the false charges which they have brought against me, and of their bitter imprecations on me. The allusion is to the accusations brought against David, and which were believed by Saul, and which were the foundation of the efforts made by Saul to take his life.