Psalms 77:15

Thou hast&c. With a (strong) arm didst thou redeem thy people. Cp. Exodus 15:13; Exodus 15:16; Exodus 6:6; Psalms 74:2.

the sons of Jacob and Joseph According to the Targum, Joseph is named because, by preserving the lives of his brethren in Egypt, lie became as it were a second father of the nation. But more probably Joseph is named as the father of Ephraim and Manasseh, the ancestors of the most powerful tribes of the Northern Kingdom. Cp. Psalms 78:67; Psalms 80:1; Psalms 81:5. In Amos (Amos 5:6; Amos 5:15; Amos 6:6) Josephdenotes the Northern Kingdom. In Obadiah 1:18, the house of Jacob and the house of Josephstands for the whole nation. Cp. Zechariah 10:6; Ezekiel 37:16; Ezekiel 37:19; Ezekiel 47:13; Ezekiel 48:32.