Possible meanings are 1) that this is an invitation for people to come and drink the water of life. Alternate translation: "Come and drink!" or 2) that this is a polite request for Jesus to return. Alternate translation: "Please come!" (See: [[rc://en/ta/man/jit/figs-explicit]])
A person's desire for eternal life is spoken of as if it were thirst and of that person receiving eternal life as if he were drinking life-giving water. (See: [[rc://en/ta/man/jit/figs-metaphor]])
Eternal life is spoken of as if it were provided by life-giving water. See how you translated this in [Revelation 21:6](../21/06.md). (See: [[rc://en/ta/man/jit/figs-metaphor]])