"by perseverance" is correct and usable in written English.
You can use it to refer to a determination to continue with something despite difficulties. For example, "He achieved his goals by perseverance and hard work."
By perseverance that would not be denied he made it a commercial reality".
Devoted to family and friends, Jack's life was shaped by perseverance.
"But some of the luck is made by investigative experience, taking time to check things out and by perseverance".
If a team can be measured by perseverance, then Coach Butch Goring had to consider last night's game a step forward.
A miracle of deliverance, achieved by valour, by perseverance, by perfect discipline, by faultless service, by resource, by skill, by unconquerable fidelity, is manifest to us all.
If his diploid human genome should become a standard, the success is one that he will have earned by perseverance and defiance of long odds.
Our security is assured by our perseverance and by our sheer belief in the success of liberty.
But the result produced divergent opinions afterward in a clubhouse as sullen as it was on Monday, when the Nationals won by nine runs, as some players pondered whether to be pleased by the perseverance revealed in the comeback or angered by their eighth loss in 12 games.
The stadium crowd pulled for Williams, but they couldn't help but be awed by Henin's guile on points, by her perseverance during rallies.
And in this time when fear seems to overcome solidarity at every turn, we are inspired by the perseverance of residents of our city of Newark, N.J., challenged by so much and yet surviving for 350 years on the dreams of generations seeking freedom -- DREAMers long ago and now again.
Malnourished children like him are at the highest risk for death by measles, and the ones whose lives can be saved by the perseverance of the Lions and GAVI.
