Amos 3:10

know not to do right Wrong-doing has become their second nature. Right(a rare word) is properly what is straight in front, fig. clear, true, straightforward(Isaiah 26:10; Isaiah 59:14; 2 Samuel 15:3).

store up violence and robbery in their palaces The nobles and great men, in Samaria as in Jerusalem (Isaiah 1:23; Isaiah 3:14, &c.) the irresponsible oppressors of the poor, are referred to: they accumulate treasures, but as these are amassed by violence and robbery, they in reality treasure up violence and robbery in their palaces (cf. Isaiah 3:14, end).

robbery A strong word, implying violent treatment, and often more adequately represented by wastingor devastation(cf. Amos 5:9; cp. on Joel, p. 81). Coupled with violence, as here, Jeremiah 6:7; Jeremiah 20:8; Ezekiel 45:9; Habakkuk 1:3 (A. V. spoilor spoiling).