to be sure; to be certain
Being safe is my job.
I just want to be sure.
Puede estar seguro que existe una cura.
You can be sure that a cure exists.
— Como agua para chocolate (1992)
Tom quería estar seguro.
Tom wanted to be sure.
Si no puedo estar seguro con mi gente, ¿con quién puedo estar seguro?
If I can't feel safe with my own people, who can I feel safe with?
— Malcolm X (1992)
I wanted to be sure.