Isaiah 6:5

But when Simon Peter saw this, he fell down at Jesus' knees, saying, "Go away from me, Lord, because I am a sinful man."

And He had seven stars in His right hand [See verse 20], and a sharp, double-edged sword came out of His mouth. And His face [shone] as the sun, shining in [all] its brilliance.

You children of snakes! Since you are evil, how do you expect to speak good things? For the mouth speaks what the heart is filled with.

Not many of you should be teachers, my brothers, because you [should] know that we [teachers] will be judged more strictly.

And the tongue is [like] a fire [i.e., like that spark]. [For] the tongue, as a part of the body, is [like] the world of evil. It corrupts the entire life [of a person] and inflames the course of nature itself [i.e., it affects a person throughout his whole earthly existence], and is ignited by hell itself [i.e., the evil produced by the fiery tongue has hell as its source and destiny].

[It is also] from Jesus Christ, who is the Faithful Witness [to the truth], the Firstborn from the dead [i.e., the first One raised never to die again], the Ruler of the kings of the world. May there be honor and power forever and ever to Christ, who loved us and released us from our sins by His blood [Note: Some manuscripts say "washed us" since the two words are spelled almost alike].

So, you too, after you have done everything you were told to, should say, 'We are unworthy slaves. We have done [only] what we were supposed to do.'"