Instead of understanding What is Jihad, first understand What is Islam. What you have written is true but in different context. So without understanding there is no point in just refering to certain quotes. Even in Mahabhrat it quotes Krishna telling Arjuna to kill your brothers, do we do that. Its a quote which is true in that context and point of time. The reason one can say Quran is the final word of God is because of the fact that it was revealed on a person who didnt know how to read and write. Do you think its possible for someone to write it on his own being a illeterate, without it being Gods word. And there are various scientific facts in Quran which modern science is discovering today. Well its shere common sense but unfortunately common sense is not common
