The purpose of the present article is to show the link between apology and the Christian testimony of faith. The author points to those moments of testimony which are characterised by justification, substantiation and thus apology of faith. He does not, therefore, talk about the apology of testimony as something additional, supposed to authenicate the testimony as it were beside it, but about a reality essentially connected with the testimony and pertaining to its nature. The subject in question is presented in three points: the apologetic dimension of the testimony of Jesus of Nazareth, the apologetic character of the permanent testimony of the Church, and the recognition and motivational effectiveness of the Christian testimony of faith.