The Bishop of London Rt Rev Sarah Mullally was among those to address crowds at the Standing Together Rally in Trafalgar Square on Saturday afternoon.
The event was organised by the street pastors group Ascension Trust, London City Mission, Churches Together in Britain and Ireland (CTBI) and Southwark Diocese.
Director of Justice and Inclusion at the CTBI, Richard Reddie told Premier before the event: "Lives have been lost, people are grieving and there are those out there who have experienced life-changing injuries.
"We want to say as churches, 'we hear that, we're standing along you', because God is standing alongside them."
Five people were knifed in the Edmonton area of north London between Saturday 30th March and last Tuesday.
A 29-year-old man has been charged with five counts of attempted murder.
The incidents are among a spate of stabbings in the capital so far this year which have provoked shock and fuelled calls for greater efforts to tackle violence crime.
Richard Reddie from the CTBI continued: "We're encouraging churches to address head-on this issue of serious youth violence and use the resources skills that they have at their disposal...
"There is a sense that the Church has quiet on this issue, that the church has made lots of statements on a variety of things, for instance Brexit, but, in terms of serious youth violence, there has been a sort of collective silence."
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