(Paraphrasing) She attended a fund-raising event for an unnamed organization where a slide show began by saying that “on the eighth day God created” this group and then presented its purposes. She found that “arrogant and self-serving” and it “bothered me beyond belief. Am I being overly sensitive?” Still, religious offenses are in the eye of the beholder and fund-raising is well worth some examination. The late Henri Nouwen observed in A Spirituality of Fundraising (Upper Room Books) that work for financial support should be seen as a “ministry” of the kingdom, not “a necessary but unpleasant activity.”
Since this question is posed to “Religion Q and A” we can assume the organization is religious. Though The Guy wasn’t present, sounds like the leaders of this group were simply saying God created the cosmos in six days and rested on the seventh, while from day eight forward to the present divinely aligned activities depend upon our human efforts.
Understood correctly, that’s no heresy, and seems to The Guy he’s heard a sermon or three saying precisely that. This agency presumably believes it is working to carry forward God’s purposes in the world, which almost any church or religious charity might think or say about itself.