How can Pharisees turn someone from God if His grace is irresistible?

How does Calvinism reconcile these words from Jesus along with its doctrine of irresistible grace (IG)? > **Matthew 23:13,15 ESV** But woe to you, scribes and Pharisees, hypocrites! For **you** shut the kingdom of heaven in people's faces. For **you** neither enter yourselves **nor allow** those who would enter to go in. Woe to you, scribes and Pharisees, hypocrites! For you travel across sea and land to make a single proselyte, and when he becomes a proselyte, **you make him** twice as much a child of hell as yourselves. I bolded the parts that seem to say that it is the Pharisees who are causing these people to turn away. The reasons why I think this passage and IG are at odds is because if the person being proselytized... 1. ...**did not** already receive God's IG, and was therefore not elect to begin with, why would Jesus say that the Pharisees *make them* a child of hell? 2. ...**did** already receive God's IG, how could any actions from the Pharisee's interfere with that?