Romans 15:15

But. write the more boldly unto you in some measure, as putting you again in remembrance, because of the grace that was given me of God,

'more boldly' -'very boldly to you on some points' (NASV), 'rather boldly' (Lenski p. 877). Paul spoke real plain in various parts of this letter. (Romans 6:12; Romans 8:9; Romans 11:17; Romans 14:3, etc..)

'as putting you again in remembrance' -'Nevertheless he has written, even with considerable boldness and frankness, not so much to tell them new truths as to remind them of those they had already received.' (Erdman p. 164) (2 Peter 1:12; Titus 3:1)

'because of the grace that was given me of God' -By God's favor Paul had been appointed as the apostle to the Gentiles (Ephesians 3:8). In writing to them and reminding them of truths that some might have forgotten, Paul was simply exercising the privilege and responsibility given him by God.

'It is not wantonly, but in the exercise of. Divine vocation, and. divinely-bestowed competence for it, that he writes.' (Gr. Ex. p. 711)