Answ. In many things.
In taking possession of us for his own, in his making of us his house and habitation, so that though the Father and the Son have both gloriously put forth gracious acts in order to our salvation, yet the Spirit is the first that makes seizure of us (1 Cor 3:16; 6:19; Eph 2:21,22). Christ, therefore, when he went away, said not that he would send the Father, but the Spirit, and that he should be in us for ever—"If I depart," said Christ, "I will send him, the Spirit of truth, the Comforter" (John 14:16; 16:7,13).
The Holy Spirit coming into us, and dwelling in us, worketh out many salvations for us now, and each of them in order also to our being saved for ever.
1. He saveth us from our darkness by illuminating of us; hence he is called "the Spirit of revelation," because he openeth the blind eyes, and so consequently delivereth us from that darkness which else would drown us in the deeps of hell (Eph 1:17,19).
2. He it is that convinceth us of the evil of our unbelief, and that shows us the necessity of our believing in Christ; without the conviction of this we should perish (John 16:9).
3. This is that finger of God by which the devil is made to give place unto grace, by whose power else we should be carried headlong to hell (Luke 11:20-22).
4. This is he that worketh faith in our hearts, without which neither the grace of the Father nor the grace of the Son can save us, "For he that believeth not, shall be damned" (Mark 16:16; Rom 15:13).
5. This is he by whom we are born again; and he that is not so born can neither see nor inherit the kingdom of heaven (John 3:3-7).
6. This is he that setteth up his kingdom in the heart, and by that means keepeth out the devil after he is cast out, which kingdom of the Spirit, whoever wanteth, they lie liable to a worse possession of the devil than ever (Matt 12:43-45; Luke 11:24,25).
7. By this Spirit we come to see the beauty of Christ, without a sight of which we should never desire him, but should certainly live in the neglect of him, and perish (John 16:14; 1 Cor 2:9-13; Isa 53:1,2).