The "star" was definitely of Satanic origin. A little known fact is that it was Satan himself. Yes, the light in the sky that the Magi observed was the glow that all angels emit. Consider the angels that visited the shepards in the field the night Jesus was born. They emitted much light. The Magi saw the "star" (Satan) from a distance, and being that its light was up in the sky, then naturally it would look the same as any regular star.
From as far back as Genesis 3:15, Satan is doomed to destruction. Satan knew that the child Jesus is the one through whom his destruction will come. So Satan had every reason for wanting Jesus dead, and the earlier the better. And so Satan appeared as a "star" to the Magi, in order to lure them into Jerusalem. Once in Jerusalem it was a cinch that Herod would learn of the Magi's visit, and it was also a cinch that Herod would never tolerate a rival to his throne. And so the plot that Satan hatched in order to have Jesus murdered when but a child was right on track, and had God himself not intervened Satan would have succeeded in Jesus being put to death ahead of time. Yes, in order for Jesus' death to serve as a "ransom" he had to become a full-grown man and willingly sacrifice himself. So it can easily be seen why Satan wanted Jesus dead when but a child. Had he succeeded he would have thwarted God's purpose and rendered Genesis 3:15 meaningless.
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