When seeking God's will, here's something I've discovered about myself -
1) If I have a friend or loved one come to me and they share a concern, then I need to wait before making a decision.
2) If I have a second friend or loved one come to me, I better pray more for God's directions.
3) If I have a third friend or loved one come to me - God's definitely trying to get my attention and sending people to warn me or affirm me depending on the situation.
4) If God is truly part of the decision/equation - if there is anxiety or worry or doubt, then I know I need to wait. God does not bring anxiety, doubt or worry to my life. God's peace will rein.
Mom and dad only have your best interest at heart. It doesn't really sound as though they are concerned about the man you love, I think they may be more concerned about the fact that you are rushing into marriage.
Four months is not a long time to get to know someone. I dated my hubby for five years and still didn't know everything about him.
Some things to think about -
1) Pre-marital counseling or mentoring for at least six weeks
2) Topics of discussion - expectations, conflict, communication, sex, family of origin, leisure activities, parenting and male/female roles and most importantly - where you are each at spiritually.
3) Do a compatability test (separately) - Growthtrac offers one that is fabulous at
http://www.growthtrac.com/checkup/
4) The less time spent preparing for marriage - the more likely a marriage is to end.
Not telling anyone or even getting fully married before God and not telling anyone.
This would be lying to your family and friends. Lies and deception usually get exposed - eventually. This would have the potential to ruin your relationship with mom and dad even more.
If you really want to know what your relationship is made of and the commitment you have to it - wait. If God is a part of it, and his blessings are upon it, all the pieces will fall into place.
Lastly, the military life is a very hard one for a wife. Your fiance will go through many changes being overseas in his maturity as a man and emotionally. He will not come back the same man as he has left.
I know this because my father was career Army for 22 years. I saw what he was like before Vietnam and I saw what he was like after Vietnam. And... he was 44 years old when he went to Nam. My parents marriage did not survive. He came back completely changed by what he saw and experienced. You will not be part of that experience. You can't be.
That will mean huge and dramatic changes to your relationship.
Essentially, if the two of your can survive waiting and still be together through this difficult time, then you are more likely to have a marriage that will survice the storms that hit it. Right now, the odds are against you.
I think it's more about your parents being scared for you, than it is that they are against this. Their emotions are obviously all over the place right now and they want to protect you.