But now (nuni de). Repeats the very words used in Rom 15:23.
I go (poreuomai). Futuristic present as in Joh 14:2.
Ministering unto the saints (diakonon tois hagiois). Present active participle of purpose like eulogounta in Act 3:26. This collection had been one of Paul’s chief cares for over a year now (see 2 Corinthians 8; 2Co 9:1-15). See note on 2Co 8:4.