The Bible tells the story of Hagar, Abram's servant who bore him his first son - Ishmael. If you remember the story, you know that God promised Abram that he would become a father, but the promise was taking a little bit too long for Abram's human tastes, so his wife, Sarai, came up with this humanly-brilliant plan where he sleeps with her servant, Hagar, and they make that kid the kid. Certainly, that's what God had in mind, right?
So Abram sleeps with Hagar, she becomes pregnant, she has a child, they name him Ishmael, and the relational tension between Hagar and Sarai becomes so extreme that Hagar runs away. In the wilderness, God comes to speak to her (Genesis 16), and in the process of His command, there is provision in the form of a well - a source of fresh water for a parched soul on the run.
She names the well Beer-Lahai-Roi - the well of the God who sees me.
This is where it becomes important to pay attention to the names and places in the Bible. It's so easy, especially in the Old Testament, to read right past these things. So many names, so many places, so little memory. But this is a well that will come back later...and not too much later.
Hagar has Ishmael, then Sarah has Isaac. (By this time, God has changed Abram and Sarai's names to Abraham and Sarah.) Isaac is the promised child. He is the one through whom God will fulfill all of the things He's said to Abraham over the course of a faithful lifetime. He is the first of the stars in the sky and the sands on the shore. Isaac is the kid.
Sarah, always jealous, sends Hagar and Ishmael away, and they go on to create a nation of their own, which is always at odds with Isaac's nation, but has a measure of the favor of God nonetheless. Ishmael is, after all, Abraham's son, too.
It's hard to know for sure how much of Ishmael's story Isaac knew. Ishmael was considerably older than Isaac. The dynamics between Sarah and Hagar were rough, at best (and actually, far worse than that). How much contact the cousins had is hard to know. How much Isaac knew about Hagar's wanderings, we don't know. How often they came in contact over the course of his growing up, or even his life, is a mystery to us. The Bible doesn't tell us. We would probably be safe in saying that he knew some things, but maybe not everything.
Still, something interesting happens.
Isaac lives his life, grows up in the Lord, walks with Abraham and learns the way of righteousness. He gets a wife, Rebekah, from his own family, marries her, and grows up to have his own kids. And, as always happens, his father, Abraham, dies. And, as was often the case in the nomadic culture of the Old Testament, after Abraham dies, Isaac picks up and keeps moving.
And the first place the Bible tells us he settles is...
Beer-Lahai-Roi.