'Teacher' in the Bible

for which I was appointed a preacher and an apostle and a teacher [of this good news regarding salvation].

The servant of the Lord must not participate in quarrels, but must be kind to everyone [even-tempered, preserving peace, and he must be], skilled in teaching, patient and tolerant when wronged.

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,