God gives enough free rein to Satan to sow many errors and corruptions, not only in the world, but also in the Church. It is with good reason that our faith should be tried, to see whether we live in uprightness, soundness, and love before our God, or whether there is any pretense in us. And there is not a truer trial of it, than when we are forced to discover in life's encounters, whether God's truth is really invincible against all errors and lies. And therefore let it not offend us when we see him sow tares: but let us think that our Lord will search us to the rock bottom, whether we bear reverence to His word earnestly and truly or not. Not that He does not already know well enough what we are; but to the end that our faith should show itself and that there should be truer record of it.