On worldly mind, worldly riches, and the single eye. Wesley's plain, severe warning against the love of money as the most subtle and pervasive of Christian sins.
Sermon 28 of 44 · 1748 · Matthew 6:19-23
Upon Our Lord's Sermon on the Mount, VIII
A passage from the sermon
Lay not up for yourselves treasures upon earth. This is no light or trifling command. The Lord knew the danger that lay therein, and gave us, therefore, this express prohibition.
The love of money — that root of all evil — is a more general, a more constant, a more dangerous enemy to true religion, than even riotous living or any other gross sin. It is to be guarded against by the entire single eye: by the constant fixing of the soul on God; by walking in the daily, hourly remembrance that no man can serve two masters.
The full sermon is in the public domain and freely available from CCEL and other archives.