"Posita manu supra sacrosanctium altare sancti ... sic juratus dixit.
Juro per hunc locum sanctum et Deum altissimum et virtutis sancti ...
quod," &c.
In the laws of Cnût of England, two forms of oath are given. They both
begin with "By the Lord before whom this relic is holy." (_Ancient Laws and
Justice of England_, p. 179.)
Your correspondent asks "what form of Judicial oath was first sanctioned by
Christians as a body?"