...jhana isn't sufficient ultimately and proclivities are a lot wider and perspectives there are very limited... But its also very useful sometimes and a good introduction albeit skewed from the suttas and not the eightfold path in its entirety. I recommend esp. Wat Metta, and also Abhayagiri... accesstoinsight.org.
According to the suttas jhana was the Buddha’s definition of the 8th fold of his Noble Eightfold Path.
Maha-satipatthana Sutta (DN 22.22) (1st Jhana)
[22]"And what (Katamo ca) seekers of Buddhahood (Bhikkhus) is right absorption (sammàsamàdhi)? There is the case where (Idha) a seeker of Buddhahood (bhikkhave bhikkhu) is withdrawn (vivicceva) from sensuality (kàmehi), withdrawn from unwholesome mental states and beliefs (akusalehi dhammehi) with applied and sustained attention (savitakkaü savicàraü) resides (viharati) in the bliss, joy (pãtisukhaü) and clarity (upasampajja) of the first ecstasy (pañhamaü jhànaü).
Translated from the Pali by Jhananda 11-02-06
The Ariyapariyesana Sutta (MN 26.28) contains a description of Dependent Origination. This description immediately precedes a description of jhana, which suggests the formula for Dependent Origination is intended to lead to jhana, and that jhana was supposed to make one invisible to Mara, the evil one.
The Noble Search, Ariyapariyesana Sutta (MN 26.28)Translated from the Pali by Jhananda 11-02-06
"Monks, there are these five strings of sensuality. Which five? Forms cognizable via the eye — agreeable, pleasing, charming, endearing, fostering desire, enticing. Sounds cognizable via the ear — agreeable, pleasing, charming, endearing, fostering desire, enticing. Aromas cognizable via the nose — agreeable, pleasing, charming, endearing, fostering desire, enticing. Tastes cognizable via the tongue — agreeable, pleasing, charming, endearing, fostering desire, enticing. Tactile sensations cognizable via the body — agreeable, pleasing, charming, endearing, fostering desire, enticing. These are the five strings of sensuality.
(1st Jhana)
"Suppose that a wild deer is living in a wilderness glen. Carefree it walks, carefree it stands, carefree it sits, carefree it lies down. Why is that? Because it has gone beyond the hunter's range. In the same way, a seeker of Buddhahood (bhikkhave bhikkhu) renounces (vivicceva) sensuality (kàmehi), renounces unwholesome mental states and beliefs (akusalehi dhammehi) with applied and sustained attention (savitakkaü savicàraü) and bliss and joy (pãtisukhaü) one resides (viharati) in the clarity (upasampajja) of the first ecstasy (pañhamaü jhànaü). This seeker of Buddhahood is said to have blinded ('andhamakàsi) Mara. Trackless (apadaü), he has destroyed Mara's vision (màracakkhuü) and has become invisible (adassanaü) to the Evil One (pàpimato).
Jhana Sutta (AN XI.36)"I tell you, the ending of mental agitation depends upon the first meditative absorption (jhana)...” (through 8th samadhi)
Edited by Jhananda to correct translation errors.
Jhanasamyutta (SN 34)
"Therein, bhikkhus, a contemplative who is skilled both in meditation that leads to meditative absorption (samadhi) and in the attainment of meditative absorption (samadhi) is the chief, the best, the foremost, the highest, the most excellent of… contemplatives."
(Bodhi, Bhikkhu trans., Samyutta Nikaya Wisdom, 2000, Page 1034) Edited by Jhananda to correct translation errors.
Jhanasamyutta, SN 9.53
"Seekers of Buddhahood, just as the River Ganges slants, slopes and inclines toward the East, so too a seeker of Buddhahood who develops and cultivates the four ecstasies (jhanas) slants, slopes, and inclines toward nibbana."
(Bodhi, Bhikkhu trans., Samyutta Nikaya Wisdom, 2000)
Edited by Jhananda to correct translation errors.
It appears that Goenka has not read nor understood the suttas.
Best regards, Jhananda