Then said Absalom to Ahithophel,.... Having two such able counsellors as he and Hushai, he directs his speech to Ahithophel, as being his first and chief counsellor:
give counsel among you what we shall do; he orders them to form a counsel, consult among themselves what was proper to be now done at Jerusalem, whether it was right to stay here or pursue after David and his men. Absalom did not send to the high priest to ask counsel of God, by Urim and Thummim before the ark, but wholly confided in his privy council.

AHITHOPHEL'S COUNSEL. (2-Samuel 16:20-23)
Give counsel among you what we shall do--This is the first cabinet council on record, although the deference paid to Ahithophel gave him the entire direction of the proceedings.

After taking possession of the capital of the kingdom, the next thing to do was to form the resolution to take and keep the throne. Absalom therefore turned to Ahithophel, and said, "Give ye counsel what we are to do." The plural הבוּ (give ye) may be explained on the supposition that the other persons present were addressed as well as Ahithophel, as being capable of giving advice.