John Gill Commentary Deuteronomy 18:12

"For whosoever doeth these things is an abomination unto Jehovah: and because of these abominations Jehovah thy God doth drive them out from before thee." — Deuteronomy 18:12 (ASV)

For all that do these things are an abomination to the
Lord
Not that do all these things, but whoever does any of them, as Jarchi notes; all such persons that use such unlawful methods, or any of them, to gain knowledge; and likewise all those that consult them, and make use of them; and especially it must be very abominable in the people of Israel to encourage such persons and practices, who had the knowledge of the true God, and him to consult on all occasions; had his law and testimony to attend unto as the rule of their conduct, and his prophets to advise with in matters of difficulty; see (Isaiah 8:20)

and because of these abominations the Lord your God does drive them
out from before you ;
as well as other sins mentioned in (Leviticus 18:24–28) and, as before observed from Cicero, all nations have been addicted to the arts of divination here condemned.