Concerning them. — There is no reason for this rendering. It should be to them. The Vulg. has cui, and the LXX. “to them,” or “to him.”
Now — i.e., This time. He means that his second act of vengeance will at least have more excuse than his assault on the Askelonites.
More blameless than the Philistines. — Rather, innocent as regards the Philistines. The words are somewhat obscure. Ewald renders them —
“This time I am quit of the Philistines,
If ‘tis evil I think of doing them.”