Extract from a Tablet of ‘Abdu’l‑Bahá
When a speaker’s brow shineth with the radiance of the love of God, at the time of his exposition of a subject, and he is exhilarated with the wine of true understanding, he becometh the centre of a potent force which, like unto a magnet, will attract the hearts. This is why the expounder must be in the utmost enkindlement.