Mark 13:12
"Now the brother shall betray the brother to death, and the father the son; and children shall rise up against their parents, and shall cause them to be put to death."
Cross References (ranked by relevance)
Matthew 10:21
And the brother shall deliver up the brother to death, and the father the child: and the children shall rise up against their parents, and cause them to be put to death.
Ezekiel 38:21
And I will call for a sword against him throughout all my mountains, saith the Lord GOD: every man’s sword shall be against his brother.
Matthew 24:10
And then shall many be offended, and shall betray one another, and shall hate one another.
Luke 21:16
And ye shall be betrayed both by parents, and brethren, and kinsfolks, and friends; and some of you shall they cause to be put to death.