"'Do not give what is holy to the dogs; nor cast your pearls before swine, lest they trample them under their feet, and turn and tear you in pieces.'
" (Matthew 7:6, NKJV throughout)
If we take that pearl (of wisdom) and cast it (meaning to throw it away without caring where it falls) before "dogs
" (a metaphor for someone with an impure or impudent mind) or "swine
" (something or someone who is unclean), Jesus warns us that they might "tear you into pieces
" (they might distort what we are saying and might even attack us.)
God tells us in the book of Proverbs
that there are times when we should be silent and times when we should respond directly to others (especially about God's truth). Jesus sometimes answered the questions and accusations thrown his way by the religious leaders of his day (e.g. Matthew 12:1-8) and sometimes refused to respond to their inquiries (e.g. Matthew 21:23-27). Proverbs states:
"Do not answer a fool according to his folly, lest you also be like him.
"Answer a fool according to his folly, lest he be wise in his own eyes." (Proverbs 26:4-5)
We must discern the reason for any questions according to the person who is doing the asking and answer within that context.
We should not cast our pearls of Godly wisdom before one who is a militant, ready to fight, unbeliever lest they turn on us and insult us or do us harm.
For Phil, I think this may have been a better time to remain silent.