יָדַ֙עְתָּ֙ אֶת־אַבְנֵ֣ר בֶּן־נֵ֔ר כִּ֥י לְפַתֹּתְךָ֖ בָּ֑א וְלָדַ֜עַת אֶת־מוֹצָֽאֲךָ֙ וְאֶת־מבואך [מ֣וֹבָאֶ֔ךָ] וְלָדַ֕עַת אֵ֛ת כָּל־אֲשֶׁ֥ר אַתָּ֖ה עֹשֶֽׂה׃
Thou knowest Abner the son of Ner, that he came to deceive thee, and to know thy going out and thy coming in, and to know all that thou doest.’
Read Kabbalistic (mystical) interpretations of II Samuel 3:25: Zohar and classical Jewish mystical sources, free online.