Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Pompeius was nevertheless glad to have found at any rate a serious employment, and above all a fitting pretext for leaving the capital. He succeeded, moreover, in providing it with ampler and cheaper supplies, although not without the provinces severely feeling the reflex effect. But he had missed his real object; the proconsular title, which he had a right to bear in all the provinces, remained an empty name, so long as he had not troops of his own at his disposal. Accordingly he soon afterwards got a second proposition made to the senate, that it should confer on him the charge of conducting back the expelled king of Egypt, if necessary by force of arms, to his home. But the more that his urgent need of the senate became evident, the senators received his wishes with a less pliant and less respectful spirit.
It was immediately discovered in the Sibylline oracles that it was impious to send a Roman army to Egypt; whereupon the pious senate almost unanimously resolved to abstain from armed intervention. Pompeius was already so humbled, that he would have accepted the mission even without an army; but in his incorrigible dissimulation he left this also to be declared merely by his friends, and spoke and voted for the despatch of another senator. Of course the senate rejected a proposal which wantonly risked a life so precious to his country; and the ultimate issue of the endless discussions was the resolution not to interfere in Egypt at all (Jan. 698).
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Reference address : https://www.ellopos.net/elpenor/rome/5-08-pompeius-caesar.asp?pg=21