This verse belongs more properly to 1 Samuel 6. Abinadab and his sons were probably of the house of Levi. The catastrophe at Bethshemesh must inevitably have made the Israelites very careful to pay due honor to the ark in accordance with the Law: but to give the care of the ark to those who were not of the house of Levi would be a gross violation of the Law.
Related Commentaries of 1 Samuel 7:1
1 Samuel 7:1
1 And the men of Kirjathjearim came, and fetched up the ark of the LORD, and brought it into the house of Abinadab in the hill, and sanctified Eleazar his son to keep the ark of the LORD.