A Texas death row inmate whose case clarified the role of spiritual advisers in death chambers nationwide is scheduled for execution Wednesday, despite efforts by a district attorney to stop his lethal injection. John Henry Ramirez, 38, was sentenced to death for killing 46-year-old Pablo Castro, a convenience store clerk, in 2004. Prosecutors said Castro was taking the trash out from the store in Corpus Christi when Ramirez robbed him of $1.25 and stabbed him 29 times. Castro’s killing took place during a series of robberies; Ramirez and two women had been stealing money following a three-day drug binge. Ramirez...