What Does The Bible Says About False Teachers?

2 Corinthians 11:13-15
2 Timothy 4:2-4
1 Timothy 4:1-3
Matthew 24: 24
Acts 20:28-30
Galatians 1:7-9
Deuteronomy 18:21-22.

To Support is Sinful:
2 John 1:10-11