Scripture is part of the teachings of the Church. If a passage of Scripture seems to contradict the teachings of the Church (which it can never do, but because of the heresies rampant in the world many will claim such things) then we must look first to the teachings of the Church. What does the Church say and how does Scripture, which is a product of the Church, reflect this?
AND, in understanding the teachings of the Church, we must take them in context of Scripture. Otherwise one may assume more than was intended. One may assume more about corporal mortification than is intended in Church teaching. Do you find it interesting that mortification is not indexed in the Catechism? So, yes, what does the Church say? Throw oneself on a rose bush? How do we interpret the Church teaching on corporal mortification in light of Mt 5 :27-30? “You have heard that it was said, ‘YOU SHALL NOT COMMIT ADULTERY’; but I say to you that everyone who looks at a woman with lust for her has already committed adultery with her in his heart. If your right eye makes you stumble, tear it out and throw it from you; for it is better for you to lose one of the parts of your body, than for your whole body to be thrown into hell. If your right hand makes you stumble, cut it off and throw it from you; for it is better for you to lose one of the parts of your body, than for your whole body to go into hell.”
In Church history some priests castrated themselves, yet this form of corporal mortification is not condoned by the Church. That is self-inflicted injury.
Consider Romans 2:28-29 “For he is not a Jew who is one outwardly, nor is circumcision that which is outward in the flesh. But he is a Jew who is one inwardly; and circumcision is that which is of the heart, by the Spirit, not by the letter; and his praise is not from men, but from God.”
Galations 5 speaks of crucifying the flesh. In context, what does this mean, since this applies to all faithful Christians?
Gal 5 “It was for freedom that Christ set us free; therefore keep standing firm and do not be subject again to a yoke of slavery. Behold I, Paul, say to you that if you receive circumcision, Christ will be of no benefit to you. And I testify again to every man who receives circumcision, that he is under obligation to keep the whole Law. You have been severed from Christ, you who are seeking to be justified by law; you have fallen from grace. or we through the Spirit, by faith, are waiting for the hope of righteousness. For in Christ Jesus neither circumcision nor uncircumcision means anything, but faith working through love. You were running well; who hindered you from obeying the truth? This persuasion did not come from Him who calls you. A little leaven leavens the whole lump of dough. I have confidence in you in the Lord that you will adopt no other view; but the one who is disturbing you will bear his judgment, whoever he is. But I, brethren, if I still preach circumcision, why am I still persecuted? Then the stumbling block of the cross has been abolished. I wish that those who are troubling you would even mutilate themselves. For you were called to freedom, brethren; only do not turn your freedom into an opportunity for the flesh, but through love serve one another. For the whole Law is fulfilled in one word, in the statement, “YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF.” But if you bite and devour one another, take care that you are not consumed by one another. But I say, walk by the Spirit, and you will not carry out the desire of the flesh. For the flesh sets its desire against the Spirit, and the Spirit against the flesh; for these are in opposition to one another, so that you may not do the things that you please. But if you are led by the Spirit, you are not under the Law. Now the deeds of the flesh are evident, which are: immorality, impurity, sensuality, idolatry, sorcery, enmities, strife, jealousy, outbursts of anger, disputes, dissensions, factions, envying, drunkenness, carousing, and things like these, of which I forewarn you, just as I have forewarned you, that those who practice such things will not nherit the kingdom of God. But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law. Now those who belong to Christ Jesus have crucified the flesh with its passions and desires. If we live by the Spirit, let us also walk by the Spirit. Let us not become boastful, challenging one another, envying one another.”
Michael