We are working to define the scope of a vow:
One who takes a vow forbidding benefit to himself from those who rest on Shabbat becomes prohibited from benefiting from a Jew, and he is also prohibited to benefit from Samaritans [Kutim]. One who takes a vow against those who eat garlic on Shabbat night is prohibited from deriving benefit from a Jew or from Samaritans. But one takes a vow against those who ascend to Jerusalem, becomes prohibited to benefit from a Jew, but is permitted to benefit from Samaritans.
These Samaritans or Kutim were a foreign people from Kutha, who were relocated to Samaria in northern Israel by Sennacherib, the Assyrian king who conquered the northern kingdom of Israel about 2700 years ago. His policy was ethnic cleansing through moving foreign peoples into conquered lands to forestall rebellion. Men don’t fight to free a land that is not their own.
The Kutim in Israel were attacked by Lions, and thought that they were being punished by the God of the Jews for squatting in the holy land. They asked Sennacherib to send them a Jewish priest to teach them Judaism so they would be protected.
They became quasi Jews, but kept some remnants of idolatry as well. They were later discovered by the rabbis to be worshipping an idol on Har Grizim. These Cutheans are commonly known as Samaritans. If you have heard of a good Samaritan, that is actually a phrase emphasizing that most of them were wicked pagans.
As we see, the Jews and the Samaritans were similar. Since the Samaritans accepted the commandments written in the Torah, they observed the Sabbath. We see that they also adopted the Rabbinical enactment to eat garlic on Friday nights. Ezra the scribe started that regulation to promote sexual health, as garlic was an aphrodisiac (Talmud, Bava Kama 82a).
So the Samaritans were externally very much alike the actual Jews. However, the Jews all over Israel would ascend the Jerusalem three times a year for the festivals. They were planning and looking forward to these pilgrimages, saving their tithes and designating animals for offerings.
The Cutheans didn’t go to Jerusalem. Part of this is because Jerusalem is not mentioned in the five books of Moses. It had not been designated yet as the place I will choose to set my name there (Deuteronomy 12:5). The Samaritans were planning to sneak off to pray to an idol on Har Grizim instead.
Even when people have identical behaviors right now, if their goals are divergent, they will end up in radically different life situations.
This wisdom is especially valuable regarding young adults. At that age many individuals are seeking to explore life and have fun. However, some already have developed goals or some idea of where they want to be. Their plans for the future begin to impact their current behaviors, perhaps leading them to seek out more than just fun.
When a younger person already has plans, he can start working towards his goals while his peers are still “finding themselves”. And for those who are already older, it pays to reexamine your plans and check your progress.