Christians will gather outside Tottenham Town Hall at 4pm, hours after a 20-year-old man was stabbed to death in Finsbury Park three miles away.
A 21-year-old man found nearby with a stab wound has been arrested on suspicion of murder, affray, and possessing an offensive weapon.
The knife attack in Seven Sisters Road at around 3am on Saturday brings the number of violent deaths in the capital to 58 so far this year.
Organiser of Sunday’s march, Nims Obunge MBE from the Peace Alliance told Premier: “I’ve never seen a need to call the Church unto the streets the way I do now; we have had such unprecedented levels of violence in our communities.”
Separately, police have launched a murder investigation after a man died following an assault in Morden in south-west London on Thursday.
Describing the impact of prayer, Mr Obunge said: “We have seen through scripture that prayers work, we’ve seen in our practical lives that prayers work.
“If we’re ever going to try and do anything drastic, I’d rather start from the source.”
Mr Obunge said further prayer walks are planned for east, south and west London in the coming weeks – ensuring each of the city’s 32 boroughs is prayed for.
Explaining why Christians must reach out to people affected by violent crime, he added: “We need to let them know ‘you can be forgiven, you can express forgiveness to others, and you can experience the power and the love of God’.
“The Church is well equipped to do this.”
Click here to listen to Premier’s Marcus Jones speaking with Nims Obunge:
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The first in a new series of prayer walks trying to reduce incidents of violent crime gets underway in north London on Sunday afternoon.