The Roman History · Amm. 21.5.10

And being all ordered solemnly to swear fidelity to him, they put their swords to their throats with terrible curses, and took the oath in the prescribed form, that for him they would undergo every kind of suffering, and even death itself, if necessity should require it; and their officers and all the friends of the prince gave a similar pledge with the same forms.

Ammianus Marcellinus · translated by C. D. Yonge · 1911 reprint
C. D. Yonge translation (preface dated February 1862); G. Bell and Sons, 1911; Project Gutenberg #28587
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