I recall seven trumpets and that the seventh horseman was green, and that he was death.

Alpha, Omega, Chi, Rho

I think that the AE diphthong links Latin and Greek somehow. And, lost somewhere I read that the English Septaguint is more accurately the Old Testament to the KJV than to the NAB-RE.

Otherwise, the Chi Rho is Jesus Christ from beginning to end …AO.