Answer:
Through the letter of 1 John we learn that fellowship with God is in: Light, Love and Life.
Step-by-step explanation:
The letters of John, 1, 2 and 3 have a specific purpose when they were written, particularly the first one, and it was to clarify certain concepts and ideas regarding Christ and the true faith of the newborn Church. Particularly, the 1st letter wanted to cement the true beliefs of the Church first in God as Light, God as Love, and finally, through Love, God as the giver of Life for humankind, all revealed to us through Jesus Christ, who is both man and God. The reason for this was that at the time, the Church was facing the increasing apearance of heretic viewpoints on the true nature of Christ, either as a Divinity, or as simply a human person who foretold the existence of God. What John does, then, in his 1st Letter, and then in the subsequent ones, is to clarify for Christians how they should think, where their faith in Christ derives and particularly, he clarifies the true position of the Church on the true nature of Christ: both as human and as the Son of God.