One God; One Christ; One Holy Spirit.
No more; no less.
"...we know that an idol is nothing in the world, and that there is none other God but one." -- 1 Corinthians 8
By why did you bring this up anyway? De Sales slams Calvinism primarily in his Controversies, extracts of which are available online. Veneration of Our Lady has nothing to do with it, because Calvin's error is more fundamental than mere defective mariology.