Presumably, that was God's power. The bible DOES have a few things to say about magic, those who practice it, and those who seem to have power similar to God's own.
Leviticus 19:31
“Do not turn to mediums or necromancers; do not seek them out, and so make yourselves unclean by them: I am the Lord your God. "
Acts 8:9-13
But there was a man named Simon, who had previously practiced magic in the city and amazed the people of Samaria, saying that he himself was somebody great. They all paid attention to him, from the least to the greatest, saying, “This man is the power of God that is called Great.” And they paid attention to him because for a long time he had amazed them with his magic. But when they believed Philip as he preached good news about the kingdom of God and the name of Jesus Christ, they were baptized, both men and women. Even Simon himself believed, and after being baptized he continued with Philip. And seeing signs and great miracles performed, he was amazed.
Deuteronomy 18:10-12
There shall not be found among you anyone who burns his son or his daughter as an offering, anyone who practices divination or tells fortunes or interprets omens, or a sorcerer or a charmer or a medium or a necromancer or one who inquires of the dead, for whoever does these things is an abomination to the Lord. And because of these abominations the Lord your God is driving them out before you.
Leviticus 20:27
“A man or a woman who is a medium or a necromancer shall surely be put to death. They shall be stoned with stones; their blood shall be upon them.”
I could post more, but you get the idea. Magic, when not coming specifically from God, from faith, is frowned upon. Punishable, even. The bible makes no mention of Santa. He is a magical being in whom parents convince their children to believe, as being an arbiter of gifts and also JUDGEMENT, upon them.