Cf. John 3

To believe, what does it mean to believe in the One sent by God to the world? In order to believe in the Word of God, your heart must be pure. It is only through the Spirit that you can believe My Word, not with your mind, but with your heart. My Word is My life that must touch the depth of your heart. A hardened heart cannot feel the touch of My living Word. The intellect can receive My Word and manipulate it, but the Spirit penetrates a heart with my Word and transforms it.

To believe is to abandon yourself to Me so that I can make you a new creation through My Spirit. What is required to believe? Humility and simplicity. That is why I say you must be like a child to truly come to believe and follow Me. You believe with the heart as you encounter the living God before you, as you hear His voice and gaze into His eyes. That is why it is only the pure of heart that can see, hear, and truly know God.

To priests / Missionaries of the Cross:

Therefore, My daughter, tell My sons to be humble as I am humble, to rely on My Spirit teaching them and not on their own understanding, for their understanding is very limited, but My understanding will bring them to encounter the living God and possess the life of the Most Holy Trinity.