Charles Ellicott Commentary Amos 2:7

"they that pant after the dust of the earth on the head of the poor, and turn aside the way of the meek: and a man and his father go unto the [same] maiden, to profane my holy name:" — Amos 2:7 (ASV)

Dust of the earth on the head of the poor.— This can only mean, as Ewald and Keil interpret, that they long to see the poor reduced to such distress that dust is thrown on their heads as a sign of grief. The meek are defrauded because they are too weak to claim their own.

The latter part of the verse points to the sensuality of the popular worship; the word “maid” actually refers to the prostitute (Hebrew: k’dçshah) who was devoted to the lustful ritual of Ashera. This obscenity is regarded by the prophet as part of a deliberate act of desecration to the name of the Holy One of Israel. Moreover, the relationship between “father” and “son” was in this way sullied and degraded (Leviticus 18:15; Leviticus 20:11).

Kuenen, Religion of Israel, volume 1, pages 92-93.