VIDEO : Kourtney Kardashian Tweets Support for Lamar Odom

As Lamar Odom remains in critical condition, Kourtney Kardashian is turning to her Christian faith as she hopes for his recovery. On Thursday, just one day after she flew to Las Vegas to join sister Khloé Kardashian at Lamar's bedside at Sunrise Hospital, Kourtney tweeted she was, "Believing in the power of prayer for this beautiful soul." She also shared a heartwarming throwback photo of Lamar and Mason Disick laughing together in happier times. All of Khloé's siblings are praying for Lamar's recovery, too. Rob Kardashian Instagrammed a throwback snap of him with Lamar, writing simply, "Praying nonstop for my brother."