I think it depends on the religion as well as culture. In Christianity, all of your suggestions would be ok except number 6 which really is a very casual informal way of speaking. In Islam for example kneeling is not so important and God would be replaced with "Allah" and the word Father would not be used. You may find it difficult to get answers as Italki Teachers are careful to observe religious sensitivities as it is a global forum covering all parts of the world. Italki also has a code of conduct which states that Teachers are not allowed to directly engage in a discussion about Religious beliefs unless raised by the student first. (see below) However as you have raised this, I am happy to help if I can. If you want more help about religious terms, kindly mail me privately and I will try to help. italki Teacher Code of Conduct Be Culturally Sensitive: Respect the values and traditions of your Students Until you build a stronger rapport with your student, try to avoid asking the following questions (unless specifically requested by the student) during your teaching sessions: Personal life Avoid asking students if they are married and or single (i.e. Do you have a girlfriend / boyfriend?) Politics Avoid asking students about their political affiliations Religion Avoid asking students about their religious views

I can imagine all of them except 6 being used. "bending your knees" doesn't have a Christian connotation I know of.