The point is that you should see everything that appears in you as something new, as a bud, a sprout, of your next state.
It is like an angel, a messenger of the Light that gradually depicts a new image in you. This is called a stranger as compared to your old state. So, you should perceive the appearance of a new image correctly. First, you see it as a stranger, and then gradually you begin to understand that it is your next, closest state.
You don’t drive this stranger away, but rather accept him since, as it is written, “You shall not oppress,” but rather, gradually draw him to you, until you begin to draw closer to him and to serve him.
The expression, “since you were strangers in the Land of Egypt,” means that the point in the heart has begun to feel itself as a stranger inside the ego. First, the ego drew it inside of itself (the seven years of satiety), and then it began to show its dominance over it (the seven years of famine), holding onto it to such an extent that it forced this point to escape from it. This is called the “exodus from Egypt.”
Thus, the stranger is actually the most important thing inside the ego.
From KabTV’s “Secrets of the Eternal Book” 5/24/13