What does Genesis 26:26 mean?

Isaac, living in Beersheba (Genesis 26:17–23), in the region of Gerar, receives visitors. King Abimelech has traveled to see him with two of the leaders of Gerar: Ahuzzath, an advisor, and Phicol, the commander of the army. Previously, Abimelech had asked Isaac to move away from his people out of a combination of envy and fear (Genesis 26:12–17).

A similar meeting occurred between Abraham, and two men named Abimelech and Phicol, in Genesis 21:22–34, though Ahuzzath was not part of it. Some scholars suggest this Abimelech is the same one that knew and negotiated with Abraham. However, this incident is at least 90 years after the meeting between Abraham and those other men. For that reason, it's more likely that Abimelech and Phicol are titles and not names. They may have fit the same role as names such as Pharaoh and Caesar. This might also mean that these are names passed down from fathers to sons, along with their respective positions.