David Lammy, (below) the Labour MP for Tottenham, was speaking before the House of Commons overwhelmingly voted to renew tthe Trident submarines by 472 in favour versus 117 against.
Renewal of the continuous at-sea deterrent is predicted to cost £31 billion with a £10 billion contingency fund also set aside.
Mr Lammy told the Commons: "I stand here first and foremost as a Christian and it's from that perspective that I speak.
"I stand united with Pope Benedict XVI when he said 'in a nuclear war there would be no victors, only victims'.
"The idea of loving thy neighbour and protecting our world for future generations simply cannot hold if we have stockpiles of weapons that will destroy our neighbours and destroy our world for future generations.
"Not only do nuclear weapons contradict religious principles, any form of international relations based on the threat of mutual destruction is totally contradictory to the preamble of Article 1 of the United Nations Charter."
David Lammy also questioned why it does not share a nuclear deterrent with other nations to lower costs.
Christian Conservative MP for Aldershot and former defence minister Sir Gerald Howarth (above) has welcomed the move to renew Trident.
He said: "I think it will send a very clear message to our enemies that we are determined to maintain our defence to secure the prosperity and the freedom of our people.
"And it will send a huge message of reassurance to our allies as well."
