They were warned not to return to Herod which they were going to do.
What evidence do you have for,
“They were following a sign given them by God,..”?
Thanks for your views but I'll go with Matthew's inspired account.
They had a TRUE sign that the King of the Jews had been born. So they went to Jerusalem ... where the King of the Jews should be found. There, they learned from the God's servants the scribes (NOT from Herod) that the King of the Jews would be found in Bethlehem, off they went, still following the star. The star, being true and therefore a sign from God, led them to the place where Jesus (the King of the Jews) was ... there they worshiped him. When God, through His angel, warned them about Herod, they OBEYED GOD. Throughout their journey, THEY OBEYED GOD.
To call them servants of Satan is unspeakable.