This will definitely upset some people. Here’s the heresy explanation anyway.

In Job 1:6, The Satan is counted among the sons (בֵּן – ben) of God. Jesus is also God’s son. Therefore, Satan is his older brother.

Many churches teach that Christians are sons of God, which makes Satan our brother as well.

I mean, yeah, some translations go with angels instead of sons for בֵּן, but why let that spoil a perfectly good heresy?