1;  He declares that his preaching, though it bring not
     excellency of speech, or of human wisdom, yet consists in
     the power of God;
  6;  and so far excels the wisdom of this world, and human sense,
     that the natural man cannot understand it.

 * when.
  Ac 18:1-4 
 * with.
  4,13  1:17  Ex 4:10  Jer 1:6,7  Ro 16:18  2Co 10:10  11:6 
 * the testimony.
  1:6  Isa 8:20  Ac 20:21  22:18  2Th 1:10  1Ti 1:11  2Ti 1:8 
  1Jo 4:14  5:11-13  Re 1:2,9  19:10