cast aside worldly security

"If we rely on ourselves, our knowledge, our ability, we lose the strongest incentive to resist temptation when it affects our wellbeing--but if we in faith cast aside worldly security and throw ourselves entirely upon God's care, knowing that we shall only be cared for if we are pleasing to Him, it will be a strong deterrent to doing anything that may forfeit His care and guardianship.

That is, if our whole treasure and insurance and dependence is in heaven in the shape of God's favor and care, we shall be much more careful not to jeopardize it or let it lapse by rendering a faulty obedience."