Again, I write a new commandment to you, which is true in him and in you; because the darkness is passing away, and the true light already shines.

 (i) It may be that the anointing means the coming of the Spirit upon the Christian in baptism. In the early Church that happened in the most visible way ( Acts 8:17). If in this passage we were to substitute the Holy Spirit for anointing we would get excellent sense. 