The Canons of Dordrecht
The Fifth Main Point of Doctrine: The Perseverance of the Saints
Article 4: The Danger of True Believers’ Falling into Serious Sins
Although that power of God strengthening and preserving true believers in grace is more than a match for the flesh, yet those converted are not always so activated and motivated by God that in certain specific actions they cannot by their own fault depart from the leading of grace, be led astray by the desires of the flesh, and give in to them. For this reason they must constantly watch and pray that they may not be led into temptations. When they fail to do this, not only can they be carried away by the flesh, the world, and Satan into sins, even serious and outrageous ones, but also by God’s just permission they sometimes are so carried away–witness the sad cases, described in Scripture, of David, Peter, and other saints falling into sins.