Hereby know we that we dwell in him, and he in us,.... That there is a communion between God and us, and a communication of his love and grace to us, and an exercise of grace upon him; for God dwells in his people by his Spirit and grace, and they dwell in him by the exercise of faith and love upon him: and this is known, because he hath given us of his Spirit: not of the essence and nature of the Spirit, which is the same with the nature of the Father and of the Son, and is incommunicable; but either of the gifts of the Spirit, which are divided to every man as he pleases, and which being bestowed on men, and used by them, for the profit and advantage of the church of God, show that God is with them, and dwells among them of a truth; or of the graces of the Spirit, such as faith, hope, and love, which are each the gifts of God; and these being bestowed and exercised, are proofs of the mutual indwelling of God and his people; See Gill on Jo1 3:24.