“The Spirit and the bride say, “Come!” And let the one who hears say, “Come!” Let the one who is thirsty come; and let the one who wishes take the free gift of the water of life.”
Revelation 22:17
“I will sprinkle clean water on you, and you will be clean; I will cleanse you from all your impurities and from all your idols. 26 I will give you a new heart and put a new spirit in you; I will remove from you your heart of stone and give you a heart of flesh.”
Ezekiel 36:25-26
“Jesus answered, “Very truly I tell you, no one can enter the kingdom of God unless they are born of water and the Spirit. 6 Flesh gives birth to flesh, but the Spirit gives birth to spirit.”
John 3:5-6
Looks like milk coming from the rock which brings to mind 1 Peter 2:2,
“and like newborn babies, long for the pure milk of the word, so that by it you may grow in respect to salvation”