It doesn't even apply to the members of the project. It's St. Benedict's rule, and only chapter 4 of it, relating to the life in a monastery, but "No one is required to follow The Rule, to know The Rule, or even to think that The Rule is a good idea." It has a whole bunch of good advice for living in a community, interspersed with religion. But if you work together on a project, "be not lazy" is not a bad suggestion. Nor is "Be a help in times of trouble". Many of those concepts have been proposed in other religions or social contracts all over the world. And it cannot be taken too seriously: "Speak no useless words or words that move to laughter"

As for programmers: Respect your seniors. Love your juniors.