1 Samuel 7:2 - Joseph Benson’s Commentary on the Old and New Testaments

For it was twenty years It is not said that this space of twenty years was all the time of the ark's abode there, for it continued there from Eli's time till David's reign, (2 Samuel 6:2,) which was forty-six years; but that it was so long there before the Israelites were sensible of their sin and misery. And all the house Or rather, as Dr. Lightfoot translates the words, Then all the house of Israel lamented after the Lord That is, followed after God with lamentations for his departure, and prayers for his return. Their idolatry had taken such deep root in them, that neither the loss of the ark, nor the slaughter of so many Israelites, wrought upon their hearts; but it was twenty years before they were brought to a proper sense of their sinfulness and guilt, and so humbled as to deplore their apostacy with genuine godly sorrow, and seek after the favour of God, and reconciliation with him.