Brethren, Brothers, or Brothers and Sisters? (Phil. 1:12)

One of the biggest debates today has to do with Bible translations. Perhaps as much as any other Greek word, adelphoi has become involved in the discussion. On Monday we'll encounter the first use of this word in our study of Philippians (1:12). 

The question here is: does the word include both men and woman? Ditto for the Greek word anthrōpoi. If so, how should these terms be rendered in English? Here are a couple of examples we'll discuss in class:

1 Tim. 2:4:

KJV = who will have all men to be saved

LSB = who desires all men to be saved 

NASB = who wants all people to be saved

ESV = who desires all people to be saved

CSB = who wants everyone to be saved

Rom. 12:1:

KJV = I beseech you, therefore, brethren

LSB = Therefore I exhort you, brothers 

ESV = I appeal to you, brothers 

NASB = Therefore, I urge you, brothers and sisters

CSB = Therefore, brothers and sisters ... I urge you

Incidentally, my personal favorite English rendering of adelphoi in Phil. 1:12 is not found above. I'll spill the beans next week!