because Abraham lived with them in the same region.
That was hundreds of years earlier. The Canaanites didn't interact religiously with Abraham. Each group had its own deity or deities.
It is no different now, even though there are many people, who know of Yahweh, it is taken as simply a sects beliefs. Why do you think that there are hundreds Christian sects alone not to mention the other Abrahamic Religions, Judaism & Islam then the non-Abrahamic religions such as Hindu, Confucianism, Buddhist etc. Just knowing what others believe in doesn't mean that they will accept or adopt it.
There is no better love between 2 people than mutual respect for each other WT Young, 2002
Who gave anyone the authority to call me an authority on anything. WT Young, 1969
Since Evolution is only ~90% correct it should be thrown out and replaced by Creation which has even a lower % of correctness. W T Young, 2008