The Egyptian hieroglyphic ankh looks kind of similar to the Christian cross. This has lead some conspiracy theorists to argue that Christians copied the ankh for their own religious symbol: the cross.

Religious statues in our homes, gardens and churches are intended to inspire us, not cause us to make them idols. Sometimes non-believers charge Christians, especially Catholics of praying to statues.

Ashes are a symbol of penance. Not every Christian religion observes Ash Wednesday or Lent. It is most strongly associated with Catholicism, but some Lutherans, Methodists, ...