Matthew 7:3-5 And why beholdest thou the mote that is in thy brother’s eye, but considerest not the beam that is in thine own eye? Or how wilt thou say to thy brother, Let me pull out the mote out of thine eye; and, behold, a beam is in thine own eye? Thou hypocrite, first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother’s eye.
2 Corinthians 13:5 Examine yourselves, whether ye be in the faith; prove your own selves. Know ye not your own selves, how that Jesus Christ is in you, except ye be reprobates?
Proverbs 18:19 A brother offended is harder to be won than a strong city: and their contentions are like the bars of a castle.
1 Peter 4:15 But let none of you suffer as a murderer, or as a thief, or as an evildoer, or as a busybody in other men’s matters.