Shalia, you seem genuinely interested in knowing more about the subject of 'who we are in Christ'.
As I and others on this thread have already said, the scriptures concerning this subject are scattered all over the New Testament, but I would start by looking in your concordance for every scripture that has the phrase 'in Christ'. You will find many.
Study these passages and ask the Holy Spirit to lead you in understanding them. Out of learning my identity in Christ came the further understanding of the authority of the believer, and from that came the commanding prayers.
I have had on my bookshelf for about 15 years, a book called 'God's New Creation' by Jack Taylor. I looked on Amazon for you and it can still be purchased for $4.50, if you want to do a study. It's very understandable, even if you are a relatively new christian.
There is a reason I use the term, praying upward, commanding downward. Revelations 1:5 says, ".......and has made us kings and priests to His God and Father.............."
In the role of priest unto God, I worship, pray, praise, inquire, and intercede upward to the Father in Jesus' Name, by the Holy Spirit.
In the role of king, serving the King of kings, I assume by faith, my heavenly position in Christ, and using the delegated authority, command downward the things He shows me are His will and purpose.
I hope this helps answer your question somewhat.