What was Jesus's first commandment in the Doctrine and Covenants?

Don't buy wine or strong drink from your enemies

Listen to the voice of Jesus ... a commandment I give unto you, that you shall not purchase wine neither strong drink of your enemies. Wherefore, you shall partake of none except it is made new among you. D&C 27:1-4 (Revelation to Joseph Smith, Harmony, Pennsylvania, August 1830)

Gather together and agree about my word.

Behold I give unto you a commandment, that ye shall assemble yourselves together to agree upon my word. D&C 41:2 (Revelation through Joseph Smith to the church at Kirtland, Ohio, February 4, 1831)

Go forth in my name, except for Joseph Smith, Jun. and Sidney Rigdon.

Hearken, O ye elders of my church, who have assembled yourselves together in my name, even Jesus Christ ... Behold, verily I say unto you, I give unto you this first commandment, that ye shall ago forth in my name, every one of you, excepting my servants Joseph Smith, Jun., and Sidney Rigdon. D&C 42:1-4 (Revelation through Joseph Smith at Kirtland, Ohio, February 9, 1831)