1Jn 3, 24 Who keeps his commandments remains in him

(1Jn 3, 24) Who keeps his commandments remains in him
[24] Those who keep his commandments remain in him, and he in them, and the way we know that he remains in us is from the Spirit that he gave us.

(CCC 1197) Christ is the true temple of God, "the place where his glory dwells"; by the grace of God, Christians also become the temples of the Holy Spirit, living stones out of which the Church is built. (CCC 1704) The human person participates in the light and power of the divine Spirit. By his reason, he is capable of understanding the order of things established by the Creator. By free will, he is capable of directing himself toward his true good. He finds his perfection "in seeking and loving what is true and good" (GS 15 § 2). (CCC 739) Because the Holy Spirit is the anointing of Christ, it is Christ who, as the head of the Body, pours out the Spirit among his members to nourish, heal, and organize them in their mutual functions, to give them life, send them to bear witness, and associate them to his self-offering to the Father and to his intercession for the whole world. Through the Church's sacraments, Christ communicates his Holy and sanctifying Spirit to the members of his Body. (CCC 2074) Jesus says: "I am the vine, you are the branches. He who abides in me, and I in him, he it is that bears much fruit, for apart from me you can do nothing" (Jn 15:5). The fruit referred to in this saying is the holiness of a life made fruitful by union with Christ. When we believe in Jesus Christ, partake of his mysteries, and keep his commandments, the Savior himself comes to love, in us, his Father and his brethren, our Father and our brethren. His person becomes, through the Spirit, the living and interior rule of our activity. "This is my commandment, that you love one another as I have loved you" (Jn 15:12).