Today is Good Friday, and a person who called to talk to me about something wished me a 'Happy Good Friday' and hoped I would celebrate and have a wonderful day. Good Friday is a day of mourning - an awful day when even the thought of the crucifixion of Christ is painful...
Observe would have been a better word, because Good Friday is a day that is observed by all believers...one thinks about the crucified Christ and all that it means.
The day that is celebrated is Easter...the day of re-birth...of spring and new beginnings...
Just a small word - what a difference in the meaning it conveys...
Increasingly I'm believing in: Speak gently...you may be treading on someone's heart/mind/sensibilities...