Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[19] Now while the city of Kirjathjearim had the ark with them, the whole body of the people betook themselves all that time to offer prayers and sacrifices to God, and appeared greatly concerned and zealous about his worship. So Samuel the prophet, seeing how ready they were to do their duty, thought this a proper time to speak to them, while they were in this good disposition, about the recovery of their liberty, and of the blessings that accompanied the same. Accordingly he used such words to them as he thought were most likely to excite that inclination, and to persuade them to attempt it: "O you Israelites," said he, "to whom the Philistines are still grievous enemies, but to whom God begins to be gracious, it behooves you not only to be desirous of liberty, but to take the proper methods to obtain it. Nor are you to be contented with an inclination to get clear of your lords and masters, while you still do what will procure your continuance under them. Be righteous then, and cast wickedness out of your souls, and by your worship supplicate the Divine Majesty with all your hearts, and persevere in the honor you pay to him; for if you act thus, you will enjoy prosperity; you will be freed from your slavery, and will get the victory over your enemies: which blessings it is not possible you should attain, either by weapons of war, or by the strength of your bodies, or by the multitude of your assistants; for God has not promised to grant these blessings by those means, but by being good and righteous men; and if you will be such, I will be security to you for the performance of God's promises." When Samuel had said thus, the multitude applauded his discourse, and were pleased with his exhortation to them, and gave their consent to resign themselves up to do what was pleasing to God. So Samuel gathered them together to a certain city called Mizpeh, which, in the Hebrew tongue, signifies a watch-tower; there they drew water, and poured it out to God, and fasted all day, and betook themselves to their prayers.