Dear Michelle,
There is a difference to oppression and possesion and it appears our brother is skirting the border of the 2.
The language he is speaking is hebrew and then tongues. Yahshua(Yeshua, Y,shua etc) is the hebrew pronunciation of the Lords name as orginally heard.
He needs to stop the grieving for the woman, it is taking his heart from God and focusing on a stumbling block, YHVH/Yahshua is our husband, yes it hurt you brother but you cant blame our Lord for the failings of other believers to honour what we may consider to be sacred commitments.
I suggest the next time the sorrow comes on you fall on your kneees and intercede instead for other saints who are suffering worse than yourself, to turn that sorrow to good use in Him, and by focusing your prayer and sorrow on/in/withhim it will give no ground for the spirit of ungodly sorrow to try and take you on.
Dont give up, if you find you mind wandering gr! ab your word and read it as as you pray and sorrow and intercede for the suffering parts of His body on this earth(possible prayer points , the suffering brethren in North Korea, homeless and abused children, etc).
In agreement level prayer , Thank You Father in Yahshua's name to strengthen my brother and sister to stand in You against this test and become overcomers to Your Glory and purpose and perfect will manifest.
Amen
I love you both in Him, but He loves us even more than what we can comprehend.
Please share back if you need further example and help in the area of intercession and spiritual warefare as lead by the Holy Spirit i will share as he leads.
PS, Bind that spirit in Yahshua's name with another strong believer(Matthew 18v18-20) and loose His peace and rest in ts stead.