1 Samuel 14:1-3

Now it fell upon a day, that Jonathan the son of Saul said unto the young man that bare his armor, Come, and let us go over to the Philistines’ garrison, that is on yonder side. But he told not his father. And Saul abode in the uttermost part of Gibeah under the pomegranate-tree which is in Migron: and the people that were with him were about six hundred men; and Ahijah, the son of Ahitub, Ichabod’s brother, the son of Phinehas, the son of Eli, the priest of Jehovah in Shiloh, wearing an ephod. And the people knew not that Jonathan was gone.