Yea, so have I strived. — Rather, but making it my ambition. The Apostle set it before him as a point of honour, not merely to carry forward a work that others had begun, but to build up the whole edifice from the foundation himself.
Not where Christ was named. — Not in places where there were Christians already.
Another man’s foundation. — Comp. 2 Corinthians 10:15-16; and for the use of the word “foundation” for the first preaching of the gospel, 1 Corinthians 3:10.