JC Ryle, in his exposition of Luke 22:32, reveals one secret of a believers perseverance in the faith: the intercession of Christ.
“The continued existence of grace in a believer’s heart is a great standing miracle. His enemies are so mighty, and his strength is so small, the world is so full of snares, and his heart is so weak, that it seems at first sight impossible for him to reach heaven. The passage before us explains his safety. He has a mighty Friend at the right hand of God, who ever lives to make intercession for him. There is a watchful Advocate, who is daily pleading for him, seeing all his daily necessities, and obtaining daily supplies of mercy and grace for his soul. His grace never altogether dies, because Christ always lives to intercede.”
“…but I have prayed for you that your faith may not fail.” (Luke 22:32)
Therefore he is able also to save them to the uttermost that come unto God by him, seeing he ever lives to make intercession for them. (Heb 7:25)