“This is His commandment, that we believe in the name of His Son Jesus Christ, and love one another, just as He commanded us” – 1 John 3:23
The call to believe the gospel IS A COMMAND.
It is not optional. It is not a suggestion. It is commanded. It is mandatory.
Disbelief is disobedience.
Belief is obedience.
Only belief in “His Son Jesus Christ” is fulfilling the commandment.