We are really glad you are here, and hope to be of support and encouragement to you. I will pray for you, your wife, your pastors, your parents, etc.
I really hope your marriage can be saved. Are there children involved? How long have you been together? I realize your wife may have a hard, fearful, or bitter heart, but hope you are also being as patient and kind as possible. The fact that your marriage has survived to this point (divorce being extremely common among police officers) is a very good sign.
Thank you for your service in both the military and as a police officer. We need good Christian men like yourself in both fields. Police work can be extremely difficult, and is often unappreciated.
May I suggest that you try to view your professional role more as a "keeper of the peace" than an "enforcer of the law"? I'm sure a liberty loving man like yourself sees the difference between "protect and serve", and "enforce laws".
Back to polygamy
I'll also point out the fact that God permits polygamy, doesn't necessarily mean you should pursue it, or that you should right now. It is not our place to tell you whether you should or not. That is between you and God, but I hope you are proceeding in wisdom.
A lot of men (me included) upon realizing that polygamy is legitimate, suddenly get excited and think we should practice it. Sometimes we wreck things (marriages, families, relationships) unnecessarily.
Yes, God's Law in the Bible permits polygamy. Yes, we should tell the truth about what the Bible says. We should also do so gently and carefully.
Remember that your wife is a weaker vessel. She has been lied to her whole life. This is a huge and difficult truth for a woman to accept. She is probably very fearful.
On a separate issue, Jasher and Enoch are both interesting and helpful reads, but I don't think YAHWEH intended either of them to be included in the Bible. God is able to protect and preserve His Word.
The Bible references a book of Jasher, but there is not a lot of evidence supporting the thought that the book of Jasher we currently have is the same book as that referenced. Our current book of Jasher is very likely a more recent book, named that to give it more credibility.