1)
What does the Torah mean when it writes "Mimenu Tih'yenah Karnosav"?
1.
Rashi: It means that the blocks on the four corners were formed from the Mizbe'ach itself, and were not made separately and soldered on to it afterwards.
2)
Why was the outer Mizbe'ach covered with copper?
1.
Moshav Zekenim (in Vayikra 6:5): Because the outer Mizbe'ach was a ladder for the angels to ascend to heaven 1 , and the appearance of angels is like copper. 2 -
1
Moshav Zekenim: As the Navi writes in Shoftim 12:20 "Va'ya'al Malach Hashem be'Lahav ha'Mizbe'ach".
2
Moshav Zekenim: As the Navi writes in Yechezkel 1:7, "k'Ayin Nechoshes Kalal".
