Proud

[LittleClarkie]

1. feeling pleasure or satisfaction over something regarded as highly honorable or creditable to oneself (often fol. by of, an infinitive, or a clause).
2. having, proceeding from, or showing a high opinion of one's own dignity, importance, or superiority.
3. having or showing self-respect or self-esteem.
4. highly gratifying to the feelings or self-esteem: It was a proud day for him when his son entered college.
5. highly honorable or creditable: a proud achievement.
6. stately, majestic, or magnificent: proud cities.
7. of lofty dignity or distinction: a proud name; proud nobles.
8. Chiefly South Midland and Southern U.S. pleased; happy: I'm proud to meet you.
9. full of vigor and spirit: a proud young stallion.
10. Obsolete. brave.
—Idiom
11. do one proud,
a. to be a source of pride or credit to a person: His conduct in such a difficult situation did him proud.
b. to treat someone or oneself generously or lavishly: You really did us proud with this supper.

[LittleClarkie]

1. "I am a proud Christian" = several fit, sorta, but #1 probably best of all

Pride as a sin = #2 I suppose. These definitions are from Dictionary.com, which seems to focus on the positive side of pride. So I went to Merriam Webster. Their synonym section gives a better indication of the kind of pride that is considered in the Christian church to be a sin.

synonyms: proud arrogant haughty lordly insolent overbearing supercilious disdainful mean showing scorn for inferiors. proud may suggest an assumed superiority or loftiness <too proud to take charity>. arrogant implies a claiming for oneself of more consideration or importance than is warranted <a conceited and arrogant executive>. haughty suggests a consciousness of superior birth or position <a haughty aristocrat>. lordly implies pomposity or an arrogant display of power <a lordly condescension>. insolent implies contemptuous haughtiness <ignored by an insolent waiter>. overbearing suggests a tyrannical manner or an intolerable insolence <an overbearing supervisor>. supercilious implies a cool, patronizing haughtiness <an aloof and supercilious manner>. disdainful suggests a more active and openly scornful superciliousness <disdainful of their social inferiors>.

I submit that Obama meant the former, and that the latter is the sin that some here have talked about in referring to Obama's statement "Gee, isn't that a sin?"