"keep their vows" is a correct and usable phrase in written English.
It can be used in various contexts, such as discussing promises, commitments, or pledges made by individuals. Here is an example sentence: The couple promised to keep their vows of love and fidelity to each other, no matter what challenges may come their way.
Henry Tumlin, 83, who lives next to the park, which he once managed, has known the "Shaw boys," as he calls them, since childhood, and is confident they will keep their vow to leave the land undeveloped.
The commission heard evidence on Tuesday from the US priest and former canonical lawyer for the Vatican Father Thomas Doyle, who said he believed half of all priests failed to keep their vow of celibacy.
Most Republicans in Congress would like to keep their vow to repeal and replace the Affordable Care Act, but they face a more urgent challenge: to stabilize insurance markets that, in some states, are in danger of melting down next year.
Not only is he eager to stamp out corruption and rescue the economy; he is also keen to escape the shadow of Georgia's former Russian masters and to bring the country into the West's clubs, including NATO and even the European Union.Mr Powell was quick to urge the Russians to keep their vow to close Soviet-era bases in Georgia.
Most likely, a good majority of Catholic priests keep their vow of celibacy, but there is no way to know for sure.
He also pledged to help ensure the three main Westminster parties keep their pre-referendum vow of delivering greater powers to the Scottish Parliament.
Western officials, who have already cut off most aid to Zimbabwe, have vowed to keep their pocketbooks shut.
In Act II, the family pulls together, vowing to keep their loved ones out of nursing homes, sure they can care for them.
Last week, conservative talk show hosts accused the president of sinister motives, and some parents vowed to keep their children out of school on Tuesday.
Leaders organizing those events, many under a group called Mobilization for Global Justice, have registered most of their events with the police in advance and have vowed to keep their rallies nonviolent.
