How do we know who the 'dogs' are in the context of the Gospel?

The term 'dogs' as used in the Gospel signifies individuals who demonstrate hostility or indifference towards God's truth. In Philippians 3:2, Paul instructs the church to 'beware of dogs,' identifying those who actively resist the Holy Scriptures and the teachings of Christ. Similarly, Peter describes those who forsake the right way as 'dogs' in 2 Peter 2:15, emphasizing their unclean state and rejection of righteousness. This identification serves as a clear warning to believers of the opposition they may face when preaching the Gospel. It is critical for believers to recognize the signs of such hostility so they can heed Christ's admonition not to waste the precious message of salvation on those blatantly opposed to it.