thirsty … wine and milk: The invitation to eat and drink is like Wisdom’s call in Proverbs 9:5. This image promises to quench thirst not only with water but also with more expensive items like wine and milk.
John applied a similar theme to Jesus Christ (John 4:14; 6:27, 35; 7:37; Revelation 21:6; 22:17).
without cost: Reconciliation with God is for anyone and has no cost.