1 Corinthians 1:29

that no flesh [no minister or other instrument of his] should glory [take pride in himself, and aspire to be head of a faction] before God. [The Corinthians in endeavoring to exalt their leaders were running counter to the counsels of God, who had rejected as his instruments all those who had worldly wisdom and power, and had chosen those utterly deficient in those things, that the triumph of his gospel might be manifestly due to his own power, and not to any excellency residing in the instruments or ministers whom he chanced to employ-- 2 Corinthians 4:7]