Deuteronomy 17:3–4

3 and has gone and aserved other gods and worshiped them, bor the sun or the moon or any of the heavenly host, cwhich I have not commanded,

4 and if it is told you and you have heard of it, then you shall inquire thoroughly. Behold, if it is true and the thing certain that this detestable thing has been done in Israel,