The sermon on the mount contrasts the Kingdom principles with the false principles of the religious teaching of the day, represented by the scribes, Pharisees, and the ruling priests. The false interpretation of the law is exposed in 5:17-48, then starting from chapter 6 Jesus condemns the hypocritical practices of the Pharisees. Jesus concludes His sermon by calling His hearers to differentiate between true commitment fueled by living faith and religious pretends. Crowds also recognize the contrast between Jesus’s and Pharisaical teaching in verses 7:29 by noticing that Jesus was teaching them as one who had authority, and not as their scribes.
Now let’s zoom in to the verse on the pearls and the pigs (Matthew 7:6). Verses before it, 7:1-5, talk about judging others. That is what the Pharisees often did (see for example John 7:49, John 9:34). Interestingly, in the parallel passage in Luke 6:37-42 there is an insertion of another parable about the blind being led by the blind (Luke 6:39-40). The fact that in Matt. 15:14 the same words are directly addressed to expose the Pharisees confirms the assumption that the passage targets to rebuke religious leaders and their practices.
Verses after 7:6 talk about our dependence on God and His willingness to respond with favor (7:7-11) followed by the warning about false teachers (7:15-23).
If the interpretation of 7:6 is about caution to share the good news of the Kingdom with non-believers, it would be a stand-alone sentence with little connection with the previous and following verses, which is non-typical for the Sermon on the Mount.
However, I believe that a better scope is to consider the passage 7:1-12 as a whole since verse 12 (Golden rule) summarizes the two points:
a) Don’t be condemning as the Pharisees, accusing people after Satan, their Father. (vs. 7:1-6)
b) Be generous and merciful as your Heavenly Father (vs. 7:7-11)
If that is the case, then the dogs and the pigs in 7:6 would refer not to the aggressive non-believers in general, but to those who misinterpret the holy law of God and use it to condemn people, instead of directing them to God. Paul uses the same language towards false law teachers in Phil 3, where he warns his hearers to look out for the dogs, look out for the evildoers, look out for those who mutilate the flesh.
The pearl, in turn, would be the message of the Kingdom described in God’s revelation, which the Pharisees trampled and then used to attack God’s people.
And, not to give the pearl to the dogs, would be a warning not to follow the teaching of the Pharisees. Again, this aligns with the parallel passage in Luke 6:40 where Jesus warns that a disciple is not above his teacher, but everyone when he is fully trained will be like his teacher. Everyone who follows the false religion will only harm themselves.
Finally, the idea that we should be wise not to share the message of the Kingdom with the “dogs and pigs” first contradicts the previous passage about not judging, and ultimately it goes against the Gospel itself. We were unclean and unholy, but Jesus graciously brought us the good news. He knew that we would attack him, but he willingly laid His life, so that His blood can sanctify us. He was trampled, so that we could be spared.
Jesus' disciples of all ages followed the Lord in His steps, bringing the good news of salvation despite the threats of losing their lives. And God, by His grace, many times showed how those who would outwardly look like the least candidates to repent, would become devoted followers of Christ.
I believe that interpreting this verse with the context of false teaching (continue reading chapter 7) in mind is more truthful to the original meaning and better equips the church for its mission.
Blessings to all,