I am familiar with the basis for a so called cannabis ministry based on the Old Testament's mention of kanneh bosem. [Forgive my spelling.] I support the right of people to create their own religion if they want.
One thing I will speak against however, is calling cannabis a sacrament or the tree of life. Yeshua Messiah [Jesus Christ] is the Tree of Life. His atoning blood is our sacrament. If you a familiar with the New Testament you know that Elohim placed His Son Yeshua as the Head of all things. Lord of Lords, King of Kings & Emanuel [Divinity with us] are some of Yeshua's 'handles'.
No substance is needed to commune with Heavenly Father. All that is needed is the Holy Spirit of the Almighty. No substance can take any one to Father's domain, only the Holy Spirit can do that.
I took a lot of acid & a few other hallucinogenics in the late 60's. Never did become a better person. When I asked Yeshua Messiah into my heart & life in 69 at a Phoenix branch of the House of Miracles I didn't need to smoke or take anything. I was about 10 days straight that evening, so I was not under any influence but the Spirit of Father.
He made Himself real to me. No aids were needed & never are. Just talk to Him straight up & ask Him to show Himself to you. Read the Gospel of John & the book of Romans for further instruction.
Having said all that, I have a MMJ card. I use MMJ for my back disease, neck problems & insomnia. I am a citizen activist for RE-legalization & I am a Christian. More accurately, a follower of The Way. Yeshua is the way, the truth & the life. No one comes to Father but by Him. He said that of Himself. Since HE IS the ONLY way to Father, cannabis & every other substance &/or ritual are all excluded. There is no magic prayer no dance, nor special chant, meditation or song. Just a humble sinner asking Him for help is all that is required. You may use your own words. Just be honest & willing to follow Him.
If you want to have a cannabis religion, that's fine with me. But please don't verge on heresy by trying to justify substance use for spiritual reasons using the Bible. The Book just does NOT back up their use for religious or spiritual reasons.