Strong G80 ἀδελφός adelphos · brother

2 Peter

1. 2 Peter 1:10
   Wherefore the rather, brethren, give diligence to make your calling and election sure: for if ye do these things, ye shall never fall:
2. 2 Peter 3:15
   And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you;