This is a polite way of saying that he had sexual relations with them. See how you translated a similar phrase in [2 Samuel 16:21](../16/21.md).(See: [[rc://en/ta/man/jit/figs-euphemism]])
This means that people were able to see the tent and Absalom walking in and out of the tent with the women. The phrase "all of Israel" is a generalization, for only people near the palace could see it. Alternate translation: "where the Israelites could see him go into the tent" (See: [[rc://en/ta/man/jit/figs-hyperbole]])
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