The light led the magi to Herod, first! There was no reason for that, other than informing Herod so that Herod would try to kill him. The Magi were just unwitting accomplices.
The Magi didn't inform King Herod that the King of the Jews had been born to instigate his murder, but rather entered King Herod's palace asking him the birthplace of the King of the Jews, thinking he would know as he was a king himself, explaining that they wanted to pay homage to/worship Him, not instigate his murder (Matt. 2:1-2). If Satan had sent the star, he was more than capable of finding men to follow it who shared the same evil blood lust as King Herod to see the King of the Jews killed and make it known then and there, considering he later found an evil man to instigate His murder: Judas Iscariot. The fact that Satan's will to see the King of the Jews killed was through the instigation of a man like Judas, a man who was unlike the Magi, to accomplish that will, it doesn't make sense for him to have chosen men like the Magi in the first place to instigate His death, especially considering the star ultimately led them to the King of the Jews so that they could accomplish their will to pay homage to/worship Him, which they did (Matt. 2:11), and Satan wouldn't have wanted that.
Therefore, God sent the star, the Magi began following it after discovering it meant the Messiah, the King of the Jews, had been born, the Magi stopped at King Herod's palace in their journey to learn the location of His birthplace, which was revealed to them by King Herod's chief priests and scribes, the Magi weren't told by King Herod that he wanted to kill Him upon learning of His birth, but rather were lied to, and they believed him, but God was protecting Jesus and them, and so He sent His angel to warn them not to return to Herod.
I appreciate your honesty in saying you did know.
Why would I lie? And, how could I
not know?
It's in Scripture. And every other Christian I know, including the Catholic Church, knows it for the same reason.
I asked you how you feel about the magi depiction in the Nativity scene, since it’s not true.
If I felt it was done to be intentionally misleading then I wouldn't feel good about it, but I don't feel that's the case. Would I
prefer that the Nativity depictions not include the Magi? Yes, but that's just my personal preferance, but I'd still want the adoration/worship of the Magi depicted as well. Now, for ascetic reasons, I can see how it would look rather cluttered to have two scenes separately depicted in art, or on someone's lawn or table, etc. That's why I said perhaps the inclusion of the Magi with the shepherds in the Nativity depictions started in order depict two separate scenes at the same time, since both groups arrived to see Him for the same purpose? Or, perhaps they felt the depiction of the very act of adoration/worship by both the shepherds and the Magi matters more than
where it's taking place, and so it was decided to depict two scenes at the same time, and chose the birthplace of Jesus as the setting for both as it's the most significant? Whatever the reason, again, I don't mind depicting the Magi with the shepherds, and I don't see the purpose of anyone doing that to deceive others, nor does it take away from the message these acts of adoration/worship gives, and if anyone did do it with the intention to deceive, that would be asinine, considering most Christians, if not all, can and have read in Scripture that the Magi weren't present with the Shepherds at Jesus's Nativity. The most important detail is depicting the adoration/worship by the shepherds and Magi to Jesus.