what does the catholic church teach about temtations?

Answer 1

"And Lead Us not into Temptation"

Temptation is not sin. Successfully fighting temptation can actually bring you closer to God.

Sin is a deliberate thought, word, deed, or omission contrary to the eternal law of God.

In other words, sin is anything that hurts your relationship with God.

With love in Christ.

Answer 2

Hi, I am Rational Spirituality,

I believe that experience and examples are the best teacher.

I believe that the examples of pervert R/C priests, including paedophiles, present the best indication to your answer.