Matthew 7:6
"Do not offer sacred things to dogs, and do not throw your pearls in front of [wild] pigs [i.e., to those who will not appreciate them], because they will probably trample on them with their feet and then turn around and attack you.
Matthew 15:14
[So], let these Pharisees alone; they are blind leaders. And if a blind person leads a blind person, both of them will fall into a ditch."
Galatians 2:11-14
But when Cephas came to Antioch [of Syria], I confronted him personally [about a matter] for which he deserved to be condemned.
Hebrews 6:4-8
[These are people] who were once enlightened [by the Gospel message], who had experienced the gift from heaven [i.e., forgiveness, never ending life, etc. See Rom. 6:23], who had partaken of the Holy Spirit [See Acts 2:38],
2 Peter 3:15-16
And consider [that] the patience of the Lord means [further opportunities for] salvation, [just] as our dearly loved brother Paul also wrote to you, using the wisdom given to him by God.