have confidence in 對....有信心
= be confident of
have confidence that + S.V. [子句]
  = be confident that + S.V. [子句]
confidential [adj.] 機密的 = classified
confide to/in~~ that + S.V. [子句]  向(人)吐露(心事)

Vincent van Gogh considered drawing to be ''the root of
everything.''
He once confided to his brother, Theo, that he could not stop
drawing because ''I really have a draftsman's fist.

{網路例句} 來源 google
1. More workers have confidence in employer.
2. He has gained confidence in his abilities and he is on the
road to success.
3. He was confident of his qualifications.
4. Mangena says he is confident that the government will see the
wisdom of  increasing research spending,
5. Confidential papers should not be discarded in wastebaskets
or recycle bins.
6. He had confided in friends and family that he was thinking of
resigning his position.