Does Praying to Saints Contradict Isaiah 8:19?

Isaiah 8:19 says, “And when they say to you, ‘Consult the mediums and the wizards who chirp and mutter,’ should not a people consult their God? Should they consult the dead on behalf of the living?” This is an example of the Bible’s prohibition on necromancy, or communicating with the dead in order to obtain information or knowledge (Deut. 18:11). The Catechism condemns necromancy (CCC 2116). But those who pray to saints ask them to pray for us; they do not use such prayers in order to gather information from the saints. For more, see “The Intercession of the Saints.”