“But ye haue an vnction from the holy One, and ye know all things.”
1611 King James Version (KJV)
2:20 But ye have an anointing - A chrism; perhaps so termed in opposition to the name of antichrist; an inward teaching from the Holy Ghost, whereby ye know all things - Necessary for your preservation from these seducers, and for your eternal salvation. St. John here but just touches upon the Holy Ghost, of whom he speaks more largely, #1Jo 3:24|; #4:13|; #5:6|.
1Jo 2:20 But ye have an unction from the Holy One. Ye are anointed with the Holy Spirit. Christian means an anointed one; Anti-Christ would mean against the Anointed. Hence John reminds them that they have been anointed by the Holy One. And ye know all things. All things needful to guard against these opposers and seducing teachers. It is the privilege of those who have this anointing to know Christ experimentally (Joh 14:22,23).