The first section of verse 12 of Jude.

"When these people eat with you in your fellowship meals commemorating the Lord’s love, they are like dangerous reefs that can shipwreck you. They are like shameless shepherds who care only for themselves. They are like clouds blowing over the land without giving any rain. They are like trees in autumn that are doubly dead, for they bear no fruit and have been pulled up by the roots."