"For Mine own sake, for Mine own sake, will I do it" (Isa. xlviii. 11).
Why this repetition? The Holy One--blessed be He!--said, "As I redeemed
you when you were in Egypt for My name's sake"--(Ps. cvi. 8), "He saved
them for His name's sake,"--"so in like manner will I do it from Edom
for My own name's sake. Again, as I redeemed you in this world, so
likewise will I redeem you in the World to come;" for thus He saith
(Eccles. i. 9), "The thing that hath been is that which shall be" (Isa.
li. 11); "The redeemed of the Lord shall return;" not the redeemed of
Elijah, nor the redeemed of the Messiah, but "the redeemed of the Lord."
THE MIDRASHIM, _Midrash Shochar Tov Tehillim_, 107.