From St. Faustina's Diary:
Sixth DaySay the Chaplet of Divine Mercy.
1220 [Jesus:] Today bring to Me the meek and humble souls and the souls of little children, and immerse them in My mercy. These souls most closely resemble My Heart. They strengthened Me during My bitter agony. I saw them as earthly Angels, who would keep vigil at My altars. I pour out upon them whole torrents of grace. Only the humble soul is able to receive My grace. I favor humble souls with My confidence.
1221 [St. Faustina:] Most Merciful Jesus, You Yourself have said, "Learn from Me for I am meek and humble of heart." Receive into the abode of Your Most Compassionate Heart all meek and humble souls and the souls of little children. These souls send all heaven into ecstasy, and they are the heavenly Father's favorites. They are a sweet-smelling bouquet before the throne of God; God himself takes delight in their fragrance. These souls have a permanent abode in Your Most Compassionate Heart, O Jesus, and they unceasingly sing out a hymn of love and mercy.
1222 A truly gentle and humble soul
Already here on earth the air of paradise breathes,
And in the fragrance of her humble heart
The Creator Himself delights.
1223 Eternal Father, turn Your merciful gaze upon meek and humble souls, and upon the souls of little children, who are enfolded in the abode which is the Most Compassionate Heart of Jesus. These souls bear the closest resemblance to Your Son. Their fragrance rises from the earth and reaches Your very throne. Father of mercy and of all goodness, I beg You by the love You bear these souls and by the delight You take in them: bless the whole world, that all souls together may sing out the praises of Your mercy for endless ages. Amen.