“God is love; and he that lives in love lives in God, and God in him.” (v.16)
Have you ever seen a person whose countenance was so joyful that you were attracted to them because they seemed to have no worries at all? Love can give one such an extreme confidence and self-security in their life, that it just bubbles over into others. Here in chapter 4 John is describing living in that kind of love, God’s perfect love.
Living in the love of God means we are confident of His love for us. So confident, that no matter what comes our way in this life, we know our loving heavenly Father (who’s Spirit is in us), has only our best interest in mind. John tells us, “There is no fear in love; but perfect love casts out all fear” (v.18). Meaning, when you are sure of God’s love for you, you don’t have to fear. Oh you can chose to fear, fret, doubt, even despair, but that usually comes when we take our minds off of God’s perfect love for us, which He demonstrated at Calvary's cross.
Therefore, keep your mind stayed on Him, do not give any quarter of your heart to doubt, and He will give you His perfect peace.
The Truth: “God will keep those in perfect peace whose mind is stayed on Him’ (Isaiah 26:3).