In 1843 he was Bampton lecturer at Oxford University, and delivered a course entitled The Past and Prospective Extension of the Gospel by Missions to the Heathen, London, 1844.
These lectures created a powerful impression, and their publication marks an epoch in the history of mission work.
In 1845 Grant was made Prebendary of Reculversland [2] in St Paul's Cathedral which he resigned in 1846 on being appointed archdeacon of St. Albans,[3] the archdeaconry of Rochester being annexed to it in 1863; in 1852 and 1861 he was select preacher at Oxford; in 1860 he became canon of Rochester Cathedral, and in 1877 chaplain to the bishop of St. Albans.
In 1882 he resigned his archdeaconry of Rochester, but retained that of St. Albans and his canonry till his death, which took place at Ramsgate 25 Nov. 1883.
Grant was remarkable for his administrative capacity, and was a good preacher.