You should pick them out for yourself! always! don't for one second think that you should let others do the job for you!
Learn to discern, it will save you your life. Ask God to give you that power, He will !! It's one of the most important Christian gifts. As you grow in faith you will experience it more
it's amazing.
When others warn us then that's a blessing from God, the wicked is revealed by Truth. Amen
Now I'm someone who believes that when someone is truly saved and preaches the same way that the apostle preached, then they will never fall away from the Faith into another Faith. Maybe stumble but remain in the faith.