Ahmadi, 19, came to the UK after seeing his brother murdered by the Taliban. He stowed away in the boot of a car and came to the country as a refugee.
The young man became a Christian in the UK and attended Christ Lutheran Church in Orpington, south-east London, where Reverend Jon Ehlers is the pastor.
Rev. Jon told Premier: "Jawid is a young Afghan refugee who's been worshiping with us since the end of 2016...he's been a real wonderful example and influence upon our congregation about what living the faith really is all about and how important it is in our daily lives, even when faced with real threats and dangers.
"He was searching for Christianity after his arrival and I'm not sure I would say that he became a Christian after coming to our church, but perhaps he did, but we, I hope, have certainly nurtured in his growth in his faith. He was baptised in our church and has attended Bible studies and we've done a lot of one to one stuff. We certainly, I hope, have been instrumental in nurturing that faith."
"I wish everybody attended church as much as Jawid does."
In Jawid's original hearing the judge said there wasn't enough evidence to say he was a Christian.
"As time went on," Rev. Jon said, "it became very obvious to me and to our congregation that he was very serious about his faith and he certainly believed that Jesus died and rose again for the forgiveness of sins, and the Trinity, and he was holding on to these things very, very strongly."
"The church members, our board of elders, myself, have all written letters of testimony in support of Jawid."
In April, the two of them went to Liverpool where the Home Office decided he wasn't a Christian and they thought he - and the church congregation - were fabricating the story, "which, as you might guess, infuriated a whole lot of us".
His next hearing was then scheduled for 9th July.
"We are convinced that Jawid's faith is real and so everybody was pretty upset by this. In fact, we had a whole delegation that was going to go up on on the 9th to show their support and a number of folks were wanting to testify on his behalf."
However, after The Times newspaper contacted the Home Office about their decision on Friday, Mr Ahmadi was told he could stay.
Rev. Jon said they weren't simply doing this for Jawid to stay but also for other other Afghan Christians in the UK who may not have such support.
"We're not just doing this because we want the guy to stay - we do - but Afghanistan is an incredibly dangerous place to live. If you're a Christian, in fact, you can't do it and this is what the home office doesn't understand either.
"This was the most infuriating thing when we would come to them and show them evidence and reports saying you cannot live as a Christian in Afghanistan. It just doesn't work. They don't have the rights and the freedoms we have and again, it just it seemed to have fallen on deaf ears."
Christ Lutheran Church are celebrating Jawid's asylum victory at their Sunday service.
"It's gonna be a fun Sunday in Christ Lutheran Church!" said the pastor, "Once we get passed all the jumping up and down and hugging and screaming, we'll carry on."
"There could be a little extra gusto in the singing this morning."
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