In his work on the Holy Spirit, Thomas Goodwin devotes a chapter to discussing how ‘we not only partake of the effects of the Holy Spirit’s operations in us, but also of his person dwelling in us.’ He follows this up in typical Puritan fashion with a chapter on the ‘uses’ we should make of this doctrine, and in particular he calls on believers to love and worship the third person of the Trinity even more than they already presumably do.
“Let us view with admiration the riches of this gift of the person of the Holy Ghost. … As in Romans 5:6-8, [the apostle] sets out the greatness of the love of God that gave Christ to die for us, so, in [verses 1-5] he would in like manner insinuate the greatness of that love that gave us this Holy Spirit to work all these graces in us, and reveal the love which God hath so much commended. Insomuch that this hath been started as matter of debate, and most serious consideration, by some divines, whether Filius datus, ‘To us a Son is given’ (Isa 9) or Spiritus datus, ‘The Spirit given’ (Rom 5) be the richer favour? Whether the incarnation, ‘God manifest in the flesh,’ or the diffusion or ‘pouring forth of the Spirit upon all flesh,’ be the greater mercy? From heaven they both came down, the Spirit as well as the Son, 1 Pet 1:2, and from the bosom of the Father both. They are both of them [pledges] and witnesses alike, of one and the same love. … If God hath given us his Spirit, how shall he not give us, I do not say, with him only, but in him, even in that one gift of him, give us all things? In this one gift of the Holy Ghost … – not gifts, as of many, but gift, as of one – is contained all the whole, both of grace and glory; tanquam in fonte, tanquam in semine; as in the seed and fountain of both.”
In some ways it’s reminiscent of a discussion that some other famous Christian raised in the past – whether to be more thankful for justification or sanctification? There must be some value in thinking through the different aspects and features of the two things being offered for contemplation, but presumably ultimately the choice is fairly artificial. There’s no separating them, in either case. They are all unspeakable gifts; they all come from the same love.