something that is certain

positive assurance

a seriousness in wanting to do something successfully

perseverance

something that has happened or been done; something known to be true or able to be proved

verifiable truth; reality

trust; unquestioning confidence

trust in something

the state or quality of being final

definiteness, conclusiveness

a feeling of confidence, strong belief, (in the goodness, strength, reliability of a person or thing); (an arrangement for) money or property held and managed by one or more people (trustees) for the benefit of another or others

belief in something as true, trustworthy