JMNT(i)
2 how that within the midst of much testing and proving which came through pressure, tribulation, oppression and affliction, the superabundance of their joy – also contrasted with the depth of their destitution (poverty, and/or life as beggars) – superabounds into the wealth (or: riches) of their singleness [of heart and purpose] and simplicity (un-complexity; or: openness and sincerity in generous sharing with others),
3 because – I continue bearing witness and testifying that – corresponding to [their] power and in accord with [their] ability, and even beyond [their] actual power and ability, [they are] those who act spontaneously and voluntarily from their own initiative,
4 with much appeal and calling of us to their side to give us relief, assistance and encouragement, repeatedly and constantly begging of us the grace (or: the favor) and the common participation (partnership and sharing from common existence) of the attending service which pertains to the dispensing into the set-apart folks (the holy ones; the saints).
5 And not according as we expected, but rather they gave themselves first to the Lord [= Christ or Yahweh; p46 & others read: God], and even (or: also) to us, through the effect of God's will and purpose,
6 [leading] us to assist and encourage Titus, so that, just as he did before in the beginning, thus also he should fully finish and complete even this favor unto you folks (or: he should bring this grace to its goal: even into you people).
7 But further, even as you folks continuously superabound within everything – in faith (or: trust; loyalty) and word (thought; idea; reason; message) and experiential knowledge, as well as with all haste to earnest diligence, and in the love from out of the midst of us [that is] within the midst of you [other MSS: the love from you [that is] within us] – that you may be progressively superabounding in this grace, also.