'Call' in the Bible

"I know your works, and your toil and perseverance, and that you can't tolerate evil men, and have tested those who call themselves apostles, and they are not, and found them false.

But to you I say, to the rest who are in Thyatira, as many as don't have this teaching, who don't know what some call 'the deep things of Satan,' to you I say, I am not putting any other burden on you.