Who is "the ruler of this world” (John 12:31)?
Satan.
What did Jesus call Satan earlier?
"The devil" (John 8:44, see
Father Abraham).
So, why does Jesus now call Satan "the ruler of this
world"?
This phrase was the well-recognized short form of "the ruler of the
darkness of this world," which Judaism used to refer to Satan, with "the
darkness"
referring to the world outside of Judaism; the Jews believed that Satan
rules over the gentiles but not them.
What "world" was Jesus referring to when He said,
"Now is the judgment of this world" (John 12:31)?
The entire world, of both gentiles and Jews.
So what was Jesus saying above?
To a crowd of both Jews and gentiles (see
the hour has come), Jesus was declaring that the Jews are not immune to
Satan's rule over sinners but that He - Jesus - will end Satan's rule
and "draw all peoples to Myself" (John 12:32).
How?
As long as people remain guilty of their sins, Satan retains his grip on
humanity. When Jesus pays on the cross - "lifted up from
the earth" (John 12:32) - the death penalty due for those sins,
Satan's grip will be cast off and Christians from "all peoples"
will be drawn to Jesus for salvation that is in and through Him.
What do the people mean by, "We have heard from the
law that the Christ remains forever" (John 12:34)?
They are referring to a prophecy given through the prophet Isaiah, "Of the
increase of His government and peace there will be no end, upon the throne
of David and over His kingdom, to order it and establish it with judgment
and justice from that time forward, even forever. The zeal of the Lord of
hosts will perform this" (Isaiah 9:7).
What does John 12:34 indicate the people to have understood
about Jesus' statement in John 12:32?
That being "lift up" meant death.
What two things didn't they know?
That Jesus would rise from the dead, and prophet Daniel's
Son of Man reference to Jesus.
To what "light" is Jesus referring in John 12:35?
Himself and His teaching: "In Him was life, and the life was the
light of men. And the light shines in the darkness, and the darkness did not
understand it" (John 1:4-5).
Does Jesus answer their question from John 12:34?
Yes, but indirectly. Instead of saying, "It's Me!" He
tells them to "walk" while the light is still shining and
showing them the way since that would soon change.
Why didn't Jesus give them a direct answer and why did
He then depart, being "hidden from them" (John 12:36)?
Much like the crowd that chased after Jesus following His feeding miracle
(see
Jesus king), this crowd had come to make Him king to lead a revolt
against the Romans.