Quoting Commentary for I Samuel 4:11

three hundred and ninety days We learned in Seder Olam (ch. 26): This teaches us that Israel sinned for three hundred and ninety years from the time they entered the Land until the ten tribes were exiled therefrom. You find [the events of] two hundred and forty-three of them delineated: From the time Jeroboam assumed the throne until Hoshea son of Elah was exiled and in “the days that the judges judged” are one hundred and eleven years. The rest, however, are not delineated. (These are [the calculations of] the three hundred and ninety years—that I found in a responsum from Rabbi Joseph, the head of the yeshivah—that the ten tribes sinned from the days of Joshua until Sannecherib exiled them from Samaria. Calculate: in the days of the Judges there were 8 years under the rule of Cushan, 18 under the rule of Eglon, 20 under the rule of Sisera, 7 under the rule of Midian, 18 under the rule of the children of Ammon, and 40 under the rule of the Philistines. This totals 111. From Micah until the Ark was captured were 40 years, totaling 151. Calculate for Jeroboam son of Nebat 22, Nadab his son 2, Baasa 24, Elah his son 2, Omri 12, Ahab 22, Ahaziah his son 2, Jehoram his brother 12, Jehu 28, Jehoahaz 17, Jehoash his son 16, Jeroboam his son 41the total is 350 (sic.). And [with] Menachem son of Gadi 10, Pekahiah his son 2, Pekah son of Remaliah 20, and Hoshea son of Elah 9 years, the total is 391, but Hoshea’s last year is not counted because in Hoshea’s ninth year, Samaria was captured and Hoshea was counted as having reigned 8 years, leaving a total of 390. The forty years that the kings of Judah sinned after the exile of Sannecherib until [the prophecy of] this chapter was said to Ezekiel are delineated below, and I did not find it necessary to explain them. This is not found in other editions.)

as I did to Shiloh in the days of Eli.

AND ISAAC’s SERVANTS CAME AND TOLD HIM CONCERNING THE WELL WHICH THEY HAD DIGGED. This is the same well mentioned above in the verse, And there Isaac’s servants digged a well.¹⁹⁴Verse 25 here. They had begun to dig it, and Abimelech came to him during that period, and on the day of the making of the covenant, when Abimelech and his retinue had left, Isaac’s servants brought him the tidings that they had found water.
It appears feasible to me that this is the same well which Abraham dug, in connection with which he gave Abimelech seven lambs as a witness [to his ownership of the well].¹⁹⁵Above, 21:30. The Philistines, however, stopped it together with the other wells, whereupon Isaac dug it again and called it by the same name which his father had called it. It is for this reason that the name of the city is Beer-sheba: on account of the well (be’er) which both the father and the son called by that name because there they swore both of them.¹⁹⁶Ibid., Verse 31. The verse there refers to Abraham and Abimelech. Ramban uses it here only as an expression to indicate that both Abraham and Isaac called the same well by the same name and both had occasion to swear over it. The name of the city “Beer-sheba” thus derives its historical significance from both the first patriarch and his son.
This well of theirs alludes to the Tabernacle at Shiloh, which the Philistines stopped when the Ark of G-d was taken captive by them.¹⁹⁷I Samuel 4:11. And they redug it, indicating that the Philistines indeed returned the Ark together with the honorary gift to G-d.¹⁹⁸Ibid., 6:11.

He delivered His might into captivity He delivered the Ark and the tablets into the hands of the Philistines.

His priests fell by the sword Hophni and Phinehas.