Perhaps, but Moses made that at God's command. It was not something he decided to do himself.
Numbers 21:6-9 6 Then the Lord sent fiery serpents among the people, and they bit the people, so that many people of Israel died. 7 And the people came to Moses and said, “We have sinned, for we have spoken against the Lord and against you. Pray to the Lord, that he take away the serpents from us.” So Moses prayed for the people. 8 And the Lord said to Moses, “Make a fiery serpent and set it on a pole, and everyone who is bitten, when he sees it, shall live.” 9 So Moses made a bronze serpent and set it on a pole. And if a serpent bit anyone, he would look at the bronze serpent and live.
That bronze serpent had an interesting end.
2 Kings 18:1-7 18 In the third year of Hoshea son of Elah, king of Israel, Hezekiah the son of Ahaz, king of Judah, began to reign. 2 He was twenty-five years old when he began to reign, and he reigned twenty-nine years in Jerusalem. His mother's name was Abi the daughter of Zechariah. 3 And he did what was right in the eyes of the Lord, according to all that David his father had done.
4 He removed the high places and broke the pillars and cut down the Asherah. And he broke in pieces the bronze serpent that Moses had made, for until those days the people of Israel had made offerings to it (it was called Nehushtan). 5 He trusted in the Lord, the God of Israel, so that there was none like him among all the kings of Judah after him, nor among those who were before him. 6 For he held fast to the Lord. He did not depart from following him, but kept the commandments that the Lord commanded Moses. 7 And the Lord was with him; wherever he went out, he prospered.
Thanks for reaffirming the point I made earlier today- That God owns things made from nature and the pagans have NO claim of anything.