The call to "love our neighbor as ourselves" is something Jesus not only reiterated in numerous ways throughout His ministry, but something he uniquely embodied Himself more radically and fully than anyone else ever has. His ministry was filled with bringing in the outsider, showing them love, and showing them that they belong.
From the beginning, Jesus always associated the love of God with the love of other people.
And that love is radical and it is unconditional. Jesus himself says, that our love for one another will in fact, be the hallmark by which others know that we are His disciples! That we love one another.