Sharing love is exactly what the enemy does not what Christians to do, he reminded the audience.
"I don't think the devil cares if we are very holy provided we stay in our buildings...I don't think he minds if you've got flames of fire. What he cares about is if those flames of fire take you out to a lost world and you start holding some hands, caring for some people, demonstrating the goodness and kindness of God. I think he cares a lot about that because then we are connected," he said.
Singlehurst challenged the church to have a bigger heart for the nation and for reaching out.
"It begins by love and love is a challenging thing. We all have to go on a journey about being big hearted," he admitted. "Allow your love to take you out. How far does the love of your church go?"
Singlehurst shared with the audience his inspiration to become a 'secret pastor'. The concept is the brainchild of Argentinean evangelist Ed Silvoso and is rooted in the idea that every Christian is a pastor and their 'congregation' is everyone they encounter in their lives, including non-Christians.
He told the audience of how he had asked God for his own 'congregation' and was soon invited by some non-Christian friends to play dominoes and cards every Thursday, only to discover they were heavy smokers. He prayed to God for a non-smoking congregation only to receive back the answer from God that this was the very 'congregation' that He wanted him to be with.
"Hanging on a cross probably didn't feel too good," he said. "And I have spent every Thursday night for the last five years in a smoke filled room. Why? Cos these are my people and if I don't love them and care for them, if I don't hold their hands, if I don't live out to them Jesus how will they ever know Jesus is real?
"How will they ever know what He is like unless they get to know me and how will they ever get to know me unless I sit in a smoke filled room? I am there with them."
Singlehurst encouraged every Christian to embark on mission together by getting involved in Hope08.
Part of Hope08 is the 'one million hours of kindness' initiative, in which Christians are donating one million hours of their time to their local communities through the running of voluntary good-will schemes and projects. These have included so far graffiti cleaning, litter picking and running mother and toddler groups.
The initiative has proven so successful that Prince Charles has invited young Christians to a reception on Wednesday to tell him about the hours they have contributed.
"Our world is interested when we start to love people," said Singlehurst. "That's what people want to see. They want to see young people that are not out there stabbing each other, but young people who care, adults who care.
"As we go out and demonstrate it makes sense to people...The people want to see our reality before they believe our words. They want to see that [our] love is genuine. They want to see if you will sit in a smoke filled room.
"How much do we really love them? Do we love enough to sit in smoke filled rooms? Do we love enough to speak in a different language?"
Christians need not feel disheartened by aggressive atheists, Singlehurst added.
"You are always going to meet people who for whatever reason are aggressive. Maybe they have had a bad experience of Christianity. Maybe there are all sorts of pain inside of them.
"I think my job is to leave them positive for the next Holy Spirit encounter. My job is not to convert them. My job is to show a little bit of love."
He concluded: "We've just got to have a lot of love and a lot of patience. And sometimes let people's anger just roll all over us. Because with anger, something has happened to them and they need to experience someone who can hold that anger.
"We will meet these people but it is surprising what happens over a period of time. The next time they meet somebody they might be a little bit different because you responded with love and care."
