... for you are all partakers of grace with me.
This reminds me of what Peter says in I Peter 3.7:
Men, listen, that woman sitting next to you, that treasure the Lord has blessed you with and entrusted to you, is a fellow heir with God's Son.Likewise, husbands, live with your wives in an understanding way,
showing honor to the woman as the weaker vessel,
since they are heirs with you of the grace of life,
so that your prayers may not be hindered.
She is royalty!
A joint heir with Christ!
As such she is to be honored and esteemed and treated with the utmost dignity and respect. Peter says we need to understand this and live with her as though we understand this. She is a child of the King.
And if, for whatever reason, we begin to loose sight of this, keep in mind that Peter attaches to his exhortation a self-serving motivation. Do you want your prayers answered? Then don't allow the way you treat your wife to hinder the Lord from giving you those answers.
You have been blessed brother. You have been given the privilege of spending your life with royalty!