"He had so many flocks and herds and servants that the Philistines envied him. So all the wells that his father's servants had dug in the time of his father Abraham, the Philistines stopped up, filling them with earth." NIV translation
Isaac was so blessed by God that the Philistines became jealous. Instead of asking themselves why he was so prosperous, they gave in to envy and filled in his wells.
This reminds us of the fact that the gospel was proclaimed to us (the Gentiles) so that the Jews might become jealous.
"Then Abimelek said to Isaac, 'Move away from us; you have become too powerful for us.'" NIV translation
This same type of thing happened to Abraham in Egypt (see Genesis 12). When those around us see our Father at work in our lives, they can either choose to accept or reject Him.
"So Isaac moved away from there and encamped in the Valley of Gerar, where he settled. Isaac reopened the wells that had been dug in the time of his father Abraham, which the Philistines had stopped up after Abraham died, and he gave them the same names his father had given them." NIV translation
Throughout the Bible, water is a picture of the word of God. When faced with the trials of his father, Isaac went back to the roots of his faith. This is a reminder to us, as Christian parents, of the importance of sharing our faith walk with our children. This prepares them for the trials that they will face in their walk with the Lord.
"Isaac's servants dug in the valley and discovered a well of fresh water there. But the herders of Gerar quarreled with those of Isaac and said, 'This water is ours!' So he named the well Esek, because they disputed with him. Then they dug another well, but they quarreled over that one also; so he named it Sitnah. He moved on from there and dug another well, and no one quarreled over it. He named it Rehoboth, saying, 'Now the Lord has given us room and we will flourish in the land.'" NIV translation
Isaac was a man of peace and patience as his servants dug wells but the water caused disputes. Instead of fighting for his rights, Isaac moved on until nobody contested his rights. It is interesting to note that he dug three wells and the number three is associated with the earthly display of God's will for men.
As Christians, we are often called upon to give up some of our comforts and rights in order to advance the gospel of peace. When those who oppose us ask us how we can do so, we have the opportunity to tell them about the peace we have found through Jesus Christ.