Joseph Benson's Commentary of the Old and New Testaments - John 7:38-39
John 7:38-39. He that believeth on me With a living faith, and with his heart unto righteousness; as the Scripture hath said As God in the Scriptures hath promised and attested in many places; out of his belly From within him, from his mind and heart; shall flow rivers of living water He shall receive spiritual blessings, or communications of divine grace, in so great an abundance, that he shall not only be refreshed and comforted himself, but shall be instrumental in refreshing and... read more
Albert Barnes' Notes on the Whole Bible - John 7:39
Of the Spirit - Of the Holy Spirit, that should be sent down to attend their preaching and to convert sinners.For the Holy Ghost was not yet given - Was not given in such full and large measures as should be after Jesus had ascended to heaven. Certain measures of the influences of the Spirit had been always given in the conversion and sanctification of the ancient saints and prophets; but that abundant and full effusion which the apostles were permitted afterward to behold had not yet been... read more