Back in Surgery

My Grandpa's neurosurgeon found some fresh bleeding so my Grandpa is going back in for more surgery. Please keep praying for his salvation. I've been praying that God would remind him of the gospel, the good news that Jesus already came and paid a price so that my Grandpa doesn't have to spend an eternity in hell. At one point in his life my Grandpa had a lot of scripture memorized. They are not sure how much Grandpa understands right now when they speak to him but the Holy Ghost speaks to the heart and can bring about a lot of understanding.