lemon as a "rare treat ... enjoyed greatly whenever it could be obtained from the enemy's camp". Jackson was fond of all fruits, particularly peaches, "but he enjoyed with relish lemons, oranges, watermelons, apples, grapes, berries, or whatever was available". Religion Jackson's religion has often been discussed. His biographer, Robert Lewis Dabney, suggested that "It was the fear of God which made him so fearless of all else." Jackson himself had said, "My religious belief teaches me to feel as safe in battle as in bed." Stephen W. Sears states that "Jackson was fanatical in his Presbyterian faith, and it energized his military thought and character. Theology was the only subject he genuinely enjoyed discussing. His dispatches invariably credited an ever-kind Providence." According to Sears, "this fanatical religiosity had drawbacks. It warped Jackson's judgment of men, leading to poor appointments; it was said he preferred good Presbyterians to good soldiers." James I. Robertson, Jr. suggests that Jackson was "a Christian soldier in every sense of the word". According to Robertson, Jackson "thought of the war as a religious crusade", and "viewed himself as an Old Testament warrior—like David or Joshua—who went into battle to slay the Philistines". Jackson encouraged the Confederate States Army revival that occurred in 1863, although it was probably more of a grass-roots movement than a top-down revival. Jackson strictly observed the Sunday Sabbath. James I. Robertson, Jr. notes that "no place existed in his Sunday schedule for labor, newspapers, or secular conversation". Command style In command, Jackson was extremely secretive about his plans and extremely meticulous about military discipline. This secretive nature did not stand him in good stead with his subordinates, who were often not aware of his overall operational intentions until the last minute, and who complained of being left out of key decisions. Robert E. Lee could trust Jackson with deliberately undetailed orders that conveyed Lee's overall objectives, what modern doctrine calls the "end state". This was because Jackson had a talent for understanding Lee's sometimes unstated goals, and Lee trusted Jackson with the ability to take whatever actions were necessary to implement his end state requirements. Few of Lee's subsequent corps commanders had this ability. At Gettysburg, this resulted in lost opportunities. With a defeated and disorganized Union Army trying to regroup on high ground near town and vulnerable, Lee sent one of his new corps commanders, Richard S. Ewell, discretionary orders