When those who are in the habit of using tea, coffee, tobacco, opium, or spirituous liquors are deprived of the accustomed indulgence, they find it impossible to engage with interest and zeal in the worship of God. Divine grace seems powerless to enliven or spiritualise their prayers or their testimonies. These professed Christians should consider the source of their enjoyment. Is it from above, or from beneath?
To a user of stimulants, everything seems insipid without the darling indulgence. This deadens the natural sensibilities of both body and mind and renders him less susceptible to the influence of the Holy Spirit. In the absence of the usual stimulant he has a hungering of body and soul, not for righteousness, not for holiness, not for God’s presence, but for his cherished idol. In the indulgence of hurtful lusts, professed Christians are daily enfeebling their powers, making it impossible to glorify God. — Sanctified Life – Chapter 3 – Controlling the Appetites and Passions