This is the 1974th most frequent Dutch word.
belofte
Promise.
Here, the word 'belofte' ('promise') denotes a commitment or assurance made by the subject.
Hij maakte een belofte aan zijn moeder.
He made a promise to his mother.
Here, 'belofte' signifies an expressed pledge of a certain virtue, 'honesty' in this case.
Zijn belofte van eerlijkheid betekent veel.
His promise of honesty means a lot.
In this context, 'belofte' metaphorically represents an expectation or prediction that something good (good weather) will happen.