It is wisdom(Ase Ifa).
Ifa says in Ogunda Ako (Ogunda Obara) that if a priest or priestess doesn’t use wisdom to interpret the divined message, they will say he or she is talking rubbish.
“A ba kii logun ka kii logbon, k’ifa o gbeni lo ju”
Whether you can chant 20 or 30 verses of a particular Odu, the most important factor is to be endowed with success by Ifa. You must learn the art of mastering of decoding sacred messages.
From Araba of Oworonsoki land, Lagos Nigeria.