There's not much new in chapter 19. We're really seeing the SAB pick up on issues that we've seen before in this book.
Was Jonathan "totally gay" for David? Lacking better evidence for the claim, I say no.
Is David violent and intolerant for killing the Philistines? Well, they were an invading army; what was he supposed to do?
What's the deal with Saul and his "evil spirit"? I don't know, but I've given some thoughts.
Why do people say "Is Saul also among the prophets?" Perhaps various reasons.
Have a nice weekend, everyone.