King James Version
And this is his commandment, That we should believe on the name of his Son Jesus Christ, and love one another, as he gave us commandment.English Standard Version
And this is his commandment, that we believe in the name of his Son Jesus Christ and love one another, just as he has commanded us.New International Version
And this is his command: to believe in the name of his Son, Jesus Christ, and to love one another as he commanded us.