{I planted} (eg(9320)ephuteusa). First aorist active indicative
of old verb phuteu(935c). This Paul did as Luke tells us in  Ac
18:1-18 . {Apollos watered} (Apoll(9373) epotisen). Apollos
irrigated the church there as is seen in  Ac 18:24-19:1 . Another
aorist tense as in verse  2 . {But God gave the increase} (alla
ho theos (8875)xanen). Imperfect tense here (active indicative) for
the continuous blessing of God both on the work of Paul and
Apollos, co-labourers with God in God's field (verse  9 ).
Reports of revivals sometimes give the glory to the evangelist or
to both evangelist and pastor. Paul gives it all to God. He and
Apollos cooperated as successive pastors.