No one sutta contains all the teachings.
To reap the greatest reward from the Canon, explore many different suttas, not just a select few.
The teachings on mindfulness, for example, although valuable, represent just a small sliver
of the entirety of the Buddha's teachings. Rule of thumb: whenever you think you understand
what the Buddha's teachings are all about, take that as a sign that you need to dig a little deeper.
...Befriending the Suttas [Tips on Reading the Pali Discourses]
https://pantip.com/topic/35640841
...No one sutta contains all the teachings.
To reap the greatest reward from the Canon, explore many different suttas, not just a select few.
The teachings on mindfulness, for example, although valuable, represent just a small sliver
of the entirety of the Buddha's teachings. Rule of thumb: whenever you think you understand
what the Buddha's teachings are all about, take that as a sign that you need to dig a little deeper.
...Befriending the Suttas [Tips on Reading the Pali Discourses]
https://pantip.com/topic/35640841