11. certify--I made known to you as to the Gospel which was
preached by me, that it is not after man, that is, not of, by,
or from man
(Ga 1:1, 12).
It is not according to man; not influenced by mere human
considerations, as it would be, if it were of human origin.
brethren--He not till now calls them so.
JFB.
Picture Study Bible