How to fight attacks in your thoughts while reading the Word?

Lately, while I'm reading the Bible, I get random thoughts which seem to be blasphemy such as; "He's not real, this didn't happen" Or, "He won't choose me to go with Him to His kingdom" Even though I KNOW how much He loves me and how strong our relationship is... These thoughts are getting debilitating at times-may be helpful to include I over think alot and have slight ocd. I would love an iron sharpens iron moment on why I think these thoughts? And also how can I fight them?