Having made a promise, I must carry it through.

既已许下诺言，我就必须履行它。

youdao

I now regret having made a promise that I would join in the scheme.

我现在后悔答应参加该计划的事。

youdao

KJV: 39 And these all, having obtained a good report through faith, received not the promise: 40 God having provided some better thing for us, that they without us should not be made perfect.

《新译本》：39所有这些人都借着信得了称许，却还没有得着所应许的；40因为上帝已经为我们预备了更美的事，使他们若不跟我们在一起，就不能完全。

youdao

In France, the presidential office of Nicolas Sarkozy found itself having to backtrack on a promise made by Mr Sarkozy that big-name politicians elected to the European Parliament for his UMP party would have to take their seats.

ECONOMIST: European politics