Ezekiel 34 and 35 speaks of how God will seek out those who have strayed as sheep who stray from their shepherd. God is displeased with those who were called to lead His people. He himself will seek them out and establish a covenant with them. The new leader will shepherd the people like David. They will be blessed and prosper.
The enemies of Israel will be punished.
2 Peter 2 warns the faithful to be careful against false prophets and teachers who might lead them astray. As for those who would hurt the righteous, God will punish them.