2 Samuel 3:25

25 Thou hast known Abner son of Ner, that to deceive thee he came, and to know thy going out and thy coming in, and to know all that thou art doing.'

2 Samuel 3:25 Meaning and Commentary

2 Samuel 3:25

Thou knowest Abner the son of Ner
Thou canst not be ignorant what a cunning deceitful man he is, nor of his designs; or dost thou not know? art thou ignorant? so read the Septuagint, Vulgate Latin, Syriac, and Arabic versions, with an interrogation:

that he came to deceive thee:
with false hopes, or to lead into wrong measures with an intention to involve and ruin him:

and to know thy going out, and coming in;
the affairs of his court, the secrets of his government, to observe his conduct and behaviour, and all his actions, and improve them against him:

and to know all that thou doest;
he suggests that he came not as a friend, but as a spy, and therefore ought to have been taken up, and detained, and not dismissed. This Joab said to set David against him, fearing, if he should be received into favour, he would be a rival of his; and besides his breast was full of revenge against him for the death of his brother.

2 Samuel 3:25 In-Context

23 and Joab and all the host that [is] with him have come, and they declare to Joab, saying, `Abner son of Ner hath come unto the king, and he sendeth him away, and he goeth in peace.'
24 And Joab cometh unto the king, and saith, `What hast thou done? lo, Abner hath come unto thee! why [is] this -- thou hast sent him away, and he is really gone?
25 Thou hast known Abner son of Ner, that to deceive thee he came, and to know thy going out and thy coming in, and to know all that thou art doing.'
26 And Joab goeth out from David, and sendeth messengers after Abner, and they bring him back from the well of Sirah, and David knew not.
27 And Abner turneth back to Hebron, and Joab turneth him aside unto the midst of the gate to speak with him quietly, and smiteth him there in the fifth [rib] -- and he dieth -- for the blood of Asahel his brother.
Young's Literal Translation is in the public domain.