Psalms 50:20

Thou sittestemphasises the deliberateness of the slander. Cp. "the session of scorners," i. 1. Thy brothermight mean any Israelite; but the alternative thine own mother's son(cp. Psalms 69:8, note) in the parallel line indicates that it is to be understood literally. The Psalmist describes a state of moral degeneracy in which even the closest ties of kinship are ignored. Cp. Micah 7:6; Jeremiah 9:4.

thou slanderest Lit. dost allege a fault against. This rendering suits the parallelism, but the phrase (which occurs here only) is of uncertain meaning, and may mean givest a thrust against(R.V. marg.), or, settest a stumbling block for.