An old Bible salesman with whom we once worked related this story: In his visiting a home to demonstrate a Bible, and upon selling it, the lady asked him this  question:“How can I keep my Bible cover from becoming dry and brittle, thus causing cracks and breaks in the binding? The salesman replied. “Use PALM OIL my lady.”The lady, not knowing of such an oil, replied, “But what is palm oil?”The man replied: “Lady, in the palm of the hand is to be found an oil, which, when applied daily to the covers of your book, will prevent deterioration of the covers caused by dryness.”This lady was able to understand this. David knew the principle, evidently, for he said: “In His law doeth he meditate day and night.”WE NEED MORE BIBLES WITH “PALM OIL”signs upon the covers. 

“But his delight is in the law of Jehovah; and in his law doth he meditate day and night”(Psa. 1:2). “Give diligence [study, KJV] to present thyself approved unto God, a workman that needeth not to be ashamed, handling aright the word of truth”(2 Tim. 2:15). “Till I come, give heed to reading, to exhortation, to teaching[doctrine, KJV]” (1 Tim 4:13).