He called it Shibah; therefore the name of the city is Beersheba to this day.
We have here the contests that had been between Isaac and the Philistines issuing in a happy peace and reconciliation. I. Abimelech pays a friendly visit to Isaac, in token of the respect he had for him, Gen 26:26. Note, When a man's ways please the Lord he makes even his enemies to be at peace with him, Pro 16:7.
Commenting on Genesis 26:26-33
Which were a grief of mind unto Isaac, and to Rebekah. The marriage of them itself was a trouble to them, it being contrary to their will that any of their children should marry with the Canaanites, and those the worst sort of them, the Hittites; it having been the care of Abraham, the father of Isaac, that his son should not marry with them...
He called it Shebah - This was probably the same well which was called Beersheba in the time of Abraham, which the Philistines had filled up, and which the servants of Isaac had reopened. The same name is therefore given to it which it had before, with the addition of the emphatic letter ה he, by which its signification became extended, so that now it...