Detained before the Lord - Either to fulfill a vow Acts 21:23-27, or on account of uncleanness, or under the law of lepers Leviticus 13:4, Leviticus 13:11, Leviticus 13:21, or as a proselyte. It is not impossible that Doeg may have been in custody or in sanctuary for some crime.
Related Commentaries of 1 Samuel 21:7
1 Samuel 21:7
7 Now a certain man of the servants of Saul was there that day, detained before the LORD; and his name was Doeg, an Edomite, the chiefest of the herdmen that belonged to Saul.