While the volumes stored in a APFS container are random access, the container itself is not. An APFS container is stored in a GPT partition. These types are partitions are sequentially stored on a drive. It is possible to expand a GPT partition to occupy space immediately before or after the partition. However, an APFS container can only be expanded to occur space immediately after, **but not before**. So you have two problems. First the ~400 GB of space is not immediately adjacent to the partition holding the APFS container. The partition with identifier `disk0s3` is between this space and the partition holding the APFS container. Second, the space is above the APFS container. So even if you were to remove `disk0s3`, you still could not add the space to the APFS container.

To summarize:

 - While the drive and APFS allow random access, the GPT scheme does not.
 - APFS can be only be expanded downwards or shrunk upwards.

If you wish to wipe the entire drive and create 1.4 TB APFS container followed by JHFS+ partition, then enter the following command.

    diskutil partitiondisk disk0 2 gpt apfs MyAPFS 1400G jhfs+ MyJHFS+ R

The EFI partition will be created automatically. If the above command was executed on a 2 TB drive, then result would be the partitioning shown below.

    /dev/disk0 (internal, physical):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      GUID_partition_scheme                        *2.0 TB     disk0
       1:                        EFI EFI                     209.7 MB   disk0s1
       2:                 Apple_APFS Container disk1         1.4 TB     disk0s2
       3:                  Apple_HFS MyJHFS+                 599.7 GB   disk0s3
    
    /dev/disk1 (synthesized):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      APFS Container Scheme -                      +1.4 TB     disk1
                                     Physical Store disk0s2
       1:                APFS Volume MyAPFS                  24.6 KB    disk1s1

The command `diskutil listfilesystems` produces the output shown below. From this output, one can determine that the `jhfs+` used in the above command means `Mac OS Extended (Journaled)`.

    Marlin:~ davidanderson$ diskutil listfilesystems
    Formattable file systems
    
    These file system personalities can be used for erasing and partitioning.
    When specifying a personality as a parameter to a verb, case is not considered.
    Certain common aliases (also case-insensitive) are listed below as well.
    
    -------------------------------------------------------------------------------
    PERSONALITY                     USER VISIBLE NAME                               
    -------------------------------------------------------------------------------
    APFS                            APFS                                            
      (or) APFSI
    Case-sensitive APFS             APFS (Case-sensitive)                           
    ExFAT                           ExFAT                                           
    Free Space                      Free Space                                      
      (or) FREE
    MS-DOS                          MS-DOS (FAT)                                    
    MS-DOS FAT12                    MS-DOS (FAT12)                                  
    MS-DOS FAT16                    MS-DOS (FAT16)                                  
    MS-DOS FAT32                    MS-DOS (FAT32)                                  
      (or) FAT32
    HFS+                            Mac OS Extended                                 
    Case-sensitive HFS+             Mac OS Extended (Case-sensitive)                
      (or) HFSX
    Case-sensitive Journaled HFS+   Mac OS Extended (Case-sensitive, Journaled)     
      (or) JHFSX
    Journaled HFS+                  Mac OS Extended (Journaled)                     
      (or) JHFS+
    Marlin:~ davidanderson$