I have a knee that isn’t reliable. I can pretty much always kneel in the pew (sometimes with my hinder end against the seat), but when it comes to the altar rail, sometimes I can kneel, and sometimes I can’t. Sometimes (less than half the time, pretty much) I can genuflect, and sometimes I can’t. There is nothing obviously wrong with me, and I am not within 30 years of looking old enough that people would just assume I had a health issue. So I understand about not being able to kneel. In addition, the altar rails in my parish are narrow (front to back), unpadded marble. Sometimes, although I can kneel, I find out when I get down to my knees that it is going to be excruciating.
Obviously, at the moment, the whole issue of kneeling for Communion for me only applies when I attend EF Mass. I have no problem with people who want to kneel for Communion in an OF Mass even though it’s optional, but I shouldn’t be one of them.
I tell you what, though, neither the uncomfortable feeling when I stand, or when I bow instead of genuflecting, nor the pain when my knee unexpectedly stops working when I am down on it already, is even comparable to the pain of Christ on the cross. I find the unexpected pain to be a blessing in disguise, as I look at the Crucifix, receive Christ on my tongue, and unite my physical suffering with His in reparation for my many sins which put Him up there. The mental pain can work the same way, if I just can’t stop worrying about what people think (which happens).
Obedience is a duty. We can talk about whether it would be a good idea to make kneeling the ordinary posture for receiving Communion, just like we can talk about whether EMHCs are a good idea. But to leave the Church if either question is decided against our preference is apostasy, cutting yourself off from the Bride of Christ. A little mental discomfort, or even righteous indignation, seems to be insufficient reason for that.
–Jen
P.S. wouldn’t it have been a better idea for that priest to talk kindly to the person about the Christian duty of Charity? He scored more points by just walking away, but he is perhaps not as likely to have softened the heart of the poor uncharitable sinner who, like the rest of us sinners, is loved infinitely by God.