As if our apostle had said, "Although there are many antichrists and seducers abroad in the world, yet the most holy God hath anointed you with his Holy Spirit, which will preserve you from pernicious error, and lead you into all necessary truth, if you obey and follow him"
Observe here, 1. A privilege enjoyed: Ye have an unction from the Holy One. By which understand the Holy Spirit in its sanctifying gifts and graces, which consecrate believers as kings and priests unto God.
Observe, 2. The advantage of that privilege declared, Ye know all things; not absolutely, but with restriction and limitation: All things: that is, all divine things, all divine things revealed, and all things revealed that are necessary to salvation: All things needful to be known, and as far as needful for you to know: all things relating to God, Christ, the Holy Spirit, ourselves, sin, Satan, the law, the gospel, grace, and glory; ye know all these things by virtue of your unction.