I will strengthen you; I will help you; I will uphold you with my victorious right hand. Isaiah 41:10

For I know the plans that I have for you declares the Lord, plans for welfare and peace and not for calamity; to give you a future and a hope. Then you will call upon Me, and come and pray to Me and I will listen to you. And you will seek Me and you will find Me when you search for Me with all of your heart. And, I will be found by you declares the Lord, and I will restore your fortunes and will gather you from all the nations and from all the places where I have driven you, declares the Lord, and I will bring you back to the place from where I sent you into exile. Jeremiah 29:11-14

And we know that all things work together for good to those who love the Lord and are called according to His purpose. Romans 8:28

Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new. 2 Corinthians 5:17

For the unbelieving husband is set apart (separated, withdrawn from heathen contamination, and affiliated with the Christian people) by union with his consecrated (set-apart) wife, and the unbelieving wife is set apart and separated through union with her consecrated husband. Otherwise your children would be unclean (unblessed heathen, outside the Christian covenant), but as it is they are prepared for God [pure and clean].
1 Corinthians 7:14 This works no matter which spouse is the believer.

So they again called the man who was blind, and said to him, "Give God the glory! We know that this Man is a sinner." He answered and said, "Whether He is a sinner or not I do not know. One thing I know: that though I was blind, now I see. John 9:24-25

But from the beginning of creation God made them male and female. For this cause, shall a man leave his father and mother, and cleave to his wife; and they twain shall be one flesh: so then they are no more twain, but one flesh.What therefore God hath joined together, let no man put asunder. Mark 10:6-9


***REMEMBER: There's an enemy out there who has had free reign in your marriage for a long time. Once you enter spiritual warfare he's going to do whatever he can to make you doubt God and His word. Stand on The Rock and just hang on. God is in control. His Word does not return to Him without results. He said so. Faith is what moves God.
It is not a matter of if it will work.
Only a matter of when.
Not when God will begin the work, but when we will SEE the visible manifestation of our faith.