'Memory' in the Bible

Then Jehu said to Bidkar, his captain, Take him up, and put him in the field of Naboth the Jezreelite: for is not that day in your memory when you and I together on our horses were going after Ahab, his father, and the Lord put this fate on him, saying:

And you are to keep in memory the agreement which I have made with you; and you are to have no other gods.