For the thought of line a, see 35.12a. The verb translated are my adversaries in line b is from satan, the same root from which the noun “satan” (adversary) is formed. Dahood retains the verb form and translates line b “(they) slander me when I seek their good,” a meaning expressed also by New Jerusalem Bible and New International Version. This is possible and brings the line more into harmony with the preceding one.

Quoted with permission from Bratcher, Robert G. and Reyburn, William D. A Handbook on the Book of Psalms. (UBS Helps for Translators). New York: UBS, 1991. For this and other handbooks for translators see here .