Charles Spurgeon Commentary John 4:14

"but whosoever drinketh of the water that I shall give him shall never thirst; but the water that I shall give him shall become in him a well of water springing up unto eternal life." — John 4:14 (ASV)

But the water that I shall give him shall be in him a well of water springing up into everlasting life.

The grace of God is a living thing, a springing and abiding thing, an everlasting thing, and he who has it in his heart has that which has saved him forever.