For I know your readiness, which I boast of as respects you to Macedonians, that Achaia is prepared since a year ago, and the zeal reported of you has stimulated the mass of the brethren.

This persuasion came not from him that called you: but a little leaven leaveneth the whole mass.

A little leaven makes a change in all the mass.

But if it only yields a mass of thorns and briers, it is considered worthless, and is in danger of being cursed, and in the end will be destroyed by fire.