Albert Barnes' Notes on the Whole Bible - Psalms 44:9
But thou hast cast off - The author of the psalm now commences a description of the existing circumstances of the nation, so strongly in contrast with what had existed in former times when God interposed in their behalf, and when he gave them success. This is properly the commencement of the second part of the psalm, and the description is continued to Psalms 44:16. The Hebrew word here rendered “hast cast off” implies disgust and abhorrence, as the casting away of that which is loathsome. See... read more
The Pulpit Commentary - Psalms 44:12
Thou sellest thy people for nought ; literally, for not-wealth (comp. Jeremiah 15:13 ). The whole people is regarded, not as sold for slaves, but as delivered over to the will of their enemies; and all "for nought," God gaining nothing in exchange . Thou dost not increase thy wealth by their price . A repetition for the sake of emphasis, but adding no new idea. read more