So Isaac prepared a feast for them, and they ate and drank.
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
And it came to pass the same day,.... That the above things were transacted: that Isaac's servants came, and told him concerning the well which they had digged; they had dug it before Abimelech came to Isaac, but they had not had an opportunity of acquainting him with it until he was gone, and then they came to give him an account of it, what...
He made them a feast - Probably on the sacrifice that was offered on the occasion of making this covenant. This was a common custom.