And this is his command: to believe in the name of his Son, Jesus Christ, and to love one another as he commanded us. ~ 1 John 3:23 KJV

And this is His order (His command, His injunction): that we should believe in (put our faith and trust in and adhere to and rely on) the name of His Son Jesus Christ (the Messiah), and that we should love one another, just as He has commanded us. ~ 1 John 3:23 AMP