In a text that can definitely be confusing on its own, Jesus says this:
6 “Do not give what is holy to dogs; and do not throw your pearls before swine, or they will trample them under foot and turn and maul you. (Matthew 7:6 NRSV)
I’m not sure Jesus’ real concern is not being stupid about giving good things to literal dogs and pigs. I’m also definitely not saying, as some have suggested, that some people are just inferior and we shouldn’t waste our time with them. Let’s look at that in context:
7 “Do not judge, so that you may not be judged. 2 For with the judgment you make you will be judged, and the measure you give will be the measure you get. 3 Why do you see the speck in your neighbor’s[a] eye, but do not notice the log in your own eye? 4 Or how can you say to your neighbor,[b] ‘Let me take the speck out of your eye,’ while the log is in your own eye? 5 You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your neighbor’s[c] eye.