“In reality there is no mortal mind, and consequently no transference of mortal thought and will-power. Life and being are of God. In Christian Science, man can do no harm, for scientific thoughts are true thoughts, passing from God to man.” (Science and Health, page 103)
As Israel marched through the promised land defeating her enemies one after another, King Balak of Moab grew desperate and so purposed to find a way to destroy Israel by other than conventional military means. So the king offered great riches to the non-Israelite prophet Balaam to attack Israel psychically.
Cursing someone requries belief in the transference of destructive thoughts from human to human.
As it turns out, Balaam, after three elaborate attempts, could not find a way to curse Israel, but instead spoke four major blessings upon Israel which became part of Judaeo-Christian spiritual tradition.
“Surely there is no enchantment [mesmerism] against Jacob, neither is there any divination against Israel: according to this time it shall be said of Jacob and of Israel, ‘What hath God wrought!” (See the Book of Numbers, chapter 22 – 24).
Also, from the Glossary chapter of Science and Health by Mary Baker Eddy:
JACOB. . . . Inspiration; the revelation of Science, in which the so-called material senses yield to the spiritual sense of Life and Love.
CHILDREN OF ISRAEL. The representatives of Soul, not corporeal sense; the offspring of Spirit, who, having wrestled with error, sin, and sense, are governed by divine Science; some of the ideas of God beheld as men, casting out error and healing the sick; Christ’s offspring.