Student or Learner
Yesterday I was listening to the recording of the John F. Kennedy inaugural speech. There you can listen to the famous passage: “it is not what your country can do for you, but what you can do for your country” . But my question is about the structure and the usage of the word “for” when he says "For I have sworn before you and Almighty God". I understand that it is very formal, but how is the pattern or the rule for use it in this way.
I hope to be clear with my doubt.
for = because