REQUIRED??
I get to tithe.
Yup. You get it.
Yes, you are right. Is it difficult at times to pay it ?
Yes, of course, and those are the very times that it is doing you the most good. The whole Christian walk is a continuing struggle to grow in Christ. Everything you do that diminishes self helps Him become more in you.
The more difficult the challenge- and the sacrificing of our finances is right up there- the more the loosening of the grip of selfdom. Then, The more room for His kingdom.