The saints are in Christ. He is our participation in the Trinity. In other words, our participation in the life of the Trinity is to become one of the persons of the Trinity. Specifically, we become “part” of the Incarnate Son, through the power of the Holy Spirit. When this happens, we don’t become equal to Christ. Rather, we become members of his Body (see Rom 12:5; 1 Cor 12:12). Christ is the Head, and we are his members–not equal to him, but truly one with him, and we ascend through him, with him, and in him, in the unity of the Holy Spirit, to the Father. In short, we truly participate as “other Christs” in Christ’s own eternal gift of self-giving love to the Father…

…our transforming communion with Christ (by the power of the Holy Spirit)… brings us home to the Father.

— Fr Michael Gaitley, MIC, The ‘One Thing’ is Three: How the Most Holy Trinity Explains Everything