Why SATAN wanted JESUS to stumble?

SATAN identifying JESUS as the SON of GOD and THE ONE who was prophesied TO BRUISE HIM IN THE HEAD, did everything he could to destroy JESUS.
The efforts to destroy JESUS when an infant were unsuccessful. GOD continued to protect JESUS
during his youth.
 After his baptism, JESUS was encountered by SATAN in the wilderness, where SATAN approached JESUS with THREE DIFFERENT STRONG TEMPTATIONS, thoroughly TESTING HIM ON THE ISSUE OF DEVOTION TO GOD.
In one of SATAN' s appeals SATAN SHOWED JESUS ALL the KINGDOMS of the WORLD,
CLAIMING THEM TO BE HIS.   JESUS DID NOT CONTRADICT THIS CLAIM. Nonetheless,
JESUS REFUSED TO CONTEMPLATE even for the briefest instant of time any "shortcut" to KINGSHIP, NOR did JESUS CONSIDER for an instant the DOING of ANYTHING merely TO
PLEASE HIMSELF.   JESUS immediate reply to SATAN was "GO AWAY, SATAN!"   For it is
written, "IT IS THE LORD YOUR GOD YOU MUST WORSHIP, AND IT IS TO HIM ALONE
YOU MUST RENDER SACRED SERVICE."

The apostle PAUL associates SATAN with "the wicked SPIRIT FORCES in the heavenly places,"
and speaks of them as " THE WORLD RULERS OF THIS DARKNESS." As a GOVERNING FORCE IN THE INVISIBLE REALM immediately above the earth, he is " THE RULER OF THE AUTHORITY OF THE AIR."   In Revelation HE IS shown to be the one "MISLEADING THE ENTIRE INHABITED EARTH."   The apostle JOHN said that " THE WHOLE WORLD IS
LYING IN THE POWER OF THE WICKED ONE." He is therefore " THE RULER OF THIS WORLD."

JESUS was ever alert to the danger of SATAN' s machinations and to the fact that SATAN desired to cause JESUS' s DESTRUCTION by getting him to entertain A THOUGHT CONTRARY TO
GOD' s WILL. This was demonstrated when PETER, on one occasion, though with good intentions,
was actually throwing TEMPTATION IN JESUS WAY.   JESUS had spoken of the suffering and death HE had to undergo.   "At this PETER took JESUS aside and commenced raising STRONG OBJECTIONS TO HIM, saying: "BE KIND TO YOURSELF, LORD; YOU WILL NOT HAVE
THIS DESTINY AT ALL." But, turning his back, JESUS said to PETER: "GET BEHIND ME,
SATAN! YOU ARE A STUMBLING BLOCK TO ME, BECAUSE YOU THINK, NOT GOD's
THOUGHTS, BUT THOSE OF MEN."