'Errors' in the Bible

He must speak in a gentle tone when correcting the errors of opponents, in the hope that God will at last give them repentance, for them to come to a full knowledge of the truth

For the time will come when people will not tolerate sound doctrine and accurate instruction [that challenges them with God’s truth]; but wanting to have their ears tickled [with something pleasing], they will accumulate for themselves [many] teachers [one after another, chosen] to satisfy their own desires and to support the errors they hold,