I have sworn; which might be done before, though it be mentioned here only. Or, I do swear; the past tense being commonly put for the present in the Hebrew tongue. Unto the house, or, concerning, as the prefix lamed is oft used, as Exodus 14:3, Exodus 18:7 2 Samuel 11:7 Psalms 91:11, compared with Matthew 4:6. Shall not be purged with sacrifice, i.e. the punishment threatened against Eli and his family shall not be prevented or hindered by all their sacrifices, as they fondly imagine, but shall infallibly be executed.
Related Commentaries of 1 Samuel 3:14
1 Samuel 3:14
14 And therefore I have sworn unto the house of Eli, that the iniquity of Eli's house shall not be purged with sacrifice nor offering for ever.