Which preposition to use with portents

of Occurrences 27%

I don't know why, but even then the affair seemed big with mystery, with the portent of tragedy.

in Occurrences 5%

These were the portents in his case.

to Occurrences 4%

Henry, who had been one of the first in earlier days to sound the note of revolution, saw in the proposed national government a portent to popular liberties.

As Occurrences 3%

Anything like this would restore the connection: The labouring heavens themselves teemed dire portent As starres &c.]

at Occurrences 2%

They are entering into the collective thought to a degree unprecedented in the world's history, and with portents at once disquieting and confused.

from Occurrences 1%

Upon which Caesar exclaimed:"It is finished: the die is cast: let us follow whither the guiding portents from heaven, and the malice of our enemy alike summon us to go."

for Occurrences 1%

" When they heard this, the soldiers deemed that it, no less than the rest, had been a portent for them, and fell into greater discouragement; and so it was that they paid no heed to the remainder of his exhortation, in which he belittled the barbarian and glorified the Roman State, offered them money and announced prizes for valor.

on Occurrences 1%

In dedicating his Memoirs to Lucullus he advised him "to think no course so safe as that which is enjoined by the [Greek: daimon] (perhaps his genius) in the night"; and Plutarch tells us several tales of portents on which he acted, evidently drawn from this same autobiography.

Which preposition to use with  portents