You cannot find one single verse in the New Testament that calls for violence against non-believers. Jesus said to love your enemies. Muhammad said to butcher your enemies.
The fact is you cannot talk about the love of God. The love of God has no meaning whatsoever unless you understand the judgment of God that all of us deserve.
While love is one of God's attributes, it's not his only attribute. God is also holy and just.
The willingness of God to sacrifice his Son to reconcile us to himself is a demonstration of his love for us.