But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. As we said before, so say I now again, If any man preach any other gospel unto you than that ye have received, let him be accursed. Galatians 1:8-9
What part of than that which we have preached unto you do you not understand? You just admitted that the RCC teaches something the apostles did not which constitutes another gospel the teachers of which are to be accursed.
Veneration of saints does not constitute another gospel because it is fully compatible with the gospel. Luther, Knox, Calvin, Smith -- these are other gospels. Go, condemn them.