Yohana 4 : 14 John chapter 4 verse 14

walakini ye yote atakayekunywa maji yale nitakayompa mimi hataona kiu milele; bali yale maji nitakayompa yatakuwa ndani yake chemchemi ya maji, yakibubujikia uzima wa milele.
soma Mlango wa 4

but whoever drinks of the water that I will give him will never thirst again; but the water that I will give him will become in him a well of water springing up to eternal life."