(b) The purpose of these ecclesiastical laws is to prevent the acceptance of spiritual or temporal jurisdiction or authority in the Church, or the commission of teaching or the benefits of membership by those who are unbelievers. Hence, the purpose is grave, and the laws themselves are held to bind under grave sin.
(c) The persons bound by these ecclesiastical laws are both ecclesiastics and laymen, namely, those who are about to be received into or reconciled with the Church, and those who are about to be admitted to some dignity, order, office or function (such as candidates for the ranks of Cardinal, bishop, canon, parish priest, religious superior, professor, preacher, confessor, doctor, etc).
(d) The form of the profession of faith is the Tridentine or Pian given in the Bull of Pius IV, _Injunctum Nobis_, of November 13, 1564, with additions referring to the Vatican Council. The oath against Modernism prescribed in the _Sacrorum Antistitum_ of Pius X, of September 1, 1910, is also obligatory.
(e) The times when these professions of faith must be made are at admission into the Church and at the reception or renewal of an office.
1004. The affirmative precepts of profession of faith, divine and ecclesiastical, oblige only at the proper time and place, and therefore on other occasions one is not obliged to make profession of faith. (a) Hence, one may avoid a profession of faith by evading interrogation in time of persecution—for example, through the payment of money to be exempted from examination, or through flight. As these acts indicate that the person is unwilling to deny his faith, but has reasons for wishing to preserve his life or to avoid the danger of apostasy, they are not of themselves unlawful, and may be a duty. (b) One may omit a profession of faith by concealing one’s religion, when prudence calls for concealment rather than publication.
1005. Flight in time of persecution is lawful or unlawful according to circumstances, since in itself it is something indifferent, being simply the act of moving from one place to another.
(a) Flight is unlawful, if one’s circumstances are such that one will do an injury to justice or charity by departure. Hence, a pastor would sin against justice if he fled in time of persecution, leaving his flock who stood in need of his presence: “The good shepherd giveth his life for his sheep. But the hireling and he that is not the shepherd, seeth the wolf coming, and leaveth the sheep and flieth” (John, x. 11, 12). Hence also, one who has no care of souls but whose presence is necessary to a persecuted community should prefer out of charity their spiritual good to his own bodily safety: “We ought to lay down our lives for the brethren” (I John, iii. 16).
(b) Flight is necessary, if one’s circumstances are such that one will do an injury to justice or charity by remaining. Hence, if a pastor’s life is necessary for his flock, while his absence can be supplied by others who will take his place, justice to his subjects requires that he save his life for their sake. Thus, for the good of souls St. Peter escaped from prison (Acts, xii. 17 sqq.); St. Paul fled from Damascus (Acts, ix. 24, 25); our Lord Himself hid when the Jews took up stones to cast at Him (John, viii. 59). Similarly, if a person is very fearful lest his courage may fail him if he is brought before the persecutors, charity to self requires that he take flight so as to escape the danger of apostasy.
(c) Flight is permissible, if there is no duty to remain and no duty to depart: “When they shall persecute you in this city, flee into another” (Matt., x. 23). Hence, if one’s presence is useful but not necessary in time of persecution, it is lawful for one to flee. Some authorities hold that the desertion of Jesus by the disciples during the Passion was not sinful flight.
1006. To refuse to flee when flight is permissible, is usually not advisable, for this is dangerous for most persons. It would be advisable, however, if a person had strong and prudent confidence of his victory, had the right intention, and used the means to prepare himself for the struggle.