A jury took just 90 minutes to declare that the 53 year old was guilty of killing the Labour MP.
The Old Bailey had heard how he shouted "Britain first" as he fired three shots at Remain campaigner Mrs Cox and stabbed her 15 times on the afternoon of June 16, days before the EU referendum.
Her family were in the courtroom for the verdict with husband Brendan telling those gathered they were not there for retribution and they feel nothing but pity for him.
Speaking to Premier, Rt Rev Jonathan Gibbs encouraged Christians to pray for the family.
He said: "Our prayer for them must be for God's love to surround them and hold them.
"For his strength to sustain them and that they will know the love and support of millions people around the country and around the world.
"We will be doing what we can to support them practically within the community."
Listen to Bishop Jonathan speaking to Premier's Alex Williams: