4 Bible Verses about God Differentiating

I will set apart in that day the land of Goshen, in which my people dwell, that no swarms of flies shall be there; to the end you may know that I am the LORD in the midst of the earth.

The LORD will make a distinction between the livestock of Israel and the livestock of Egypt; and there shall nothing die of all that belongs to the children of Israel."'"

But against any of the children of Israel a dog won't even bark or move its tongue, against man or animal; that you may know that the LORD makes a distinction between the Egyptians and Israel.

For how would people know that I have found favor in your sight, I and your people? Isn't it in that you go with us, so that we are separated, I and your people, from all the people who are on the surface of the earth?"