Thank you for your comment. Any perek, or chapter, of Tehillim you say can go toward the war effort and is powerful. They say 20, 79, 80, 83, 121, 130, 142 are particularly pertinent when Israel or Jews are in danger. In terms of what the verses mean, try and look at the words. So many I’ve read during this speak about our enemies, how not to be afraid, that G-d is with us. Sometimes, it feels like old English and even the language we understand doesn’t make sense — I totally get what you’re saying! But as you get more into it, as you look at the lines more closely, it’s all right there. The text is soothing in itself and you’re changing yourself as you read. Kol ha kavod at taking this on. Even if you don’t fully understand it, it has power. Keep fighting.