prove Christian values hypocritical?

Why is so hard for people to forgive Bible-thumping Republicans for their sexual transgressions?

Here is Mark Sanford email:

(note: He sited Bible:

I looked to where I often look for advice and counsel, and in I
Corinthians 13 it simply says that,  "Love is patient and kind, love
is not jealous or boastful, it is not arrogant or rude, Love does not
insist on its own way, it is not irritable or resentful, it does not
rejoice in the wrong, but rejoices in the right, Love bears all
things, believes all things, hopes all things and endures all things".
)