Canons of Dort 3.13

Chapter 3 — Third and Fourth Head of Doctrine: Of the Corruption of Man, His Conversion to God, and the Manner Thereof

Section 13. Article 13: The Incomprehensible Way of Regeneration. In this life believers cannot fully understand the way this work occurs; meanwhile, they rest content with knowing and experiencing that, by this grace of God, they do believe with the heart and love their Savior.