King Hanun rejected King David's loyalty to his family by shaving his servants, so David sheltered them at Jericho until they were presentable again
King Hanun suspected David's servants of being spies, so he shaved off half the beard of each and cut off their garments in the middle, at their hips. (2 Samuel 10:4) They were greatly ashamed, so David met them himself and told them to remain at Jericho until their beards regrew then return. (2 Samuel 10:5)
Biblical Manuscript Finds
Before the Qumran find, few manuscripts had been discovered in the Holy Land. Origen mentioned using Hebrew and Greek manuscripts that had been stored in jars in caves near Jericho. Also, In the 9th century A.D., Timothy I wrote a letter to Sergius, Metropolitan of Elam, referencing a large number of Hebrew manuscripts found in a cave near Jericho. For more than 1000 years since then, no other significant manuscript discoveries were forthcoming from caves in that region near the Dead Sea.
(The Origin of the Bible: Newly Updated by F. F. Bruce, J. I. Packer, Philip W. Comfort, and Carl F. H. Henry, 2020. Texts and Manuscripts of the Old Testament by Mark R. Norton, Page 161)