It is.

Revelation 16:17
Then the seventh angel poured out his bowl into the air, and a loud voice came from the throne in the temple, saying, "It is done!"

I am.

Revelation 1:8, 11, 17
"I am the Alpha and the Omega, " says the Lord God, who is and was and is to come--the Almighty. . . .

Revelation 22:13
I am the Alpha and the Omega, the First and the Last, the Beginning and the End."

I will.

Revelation 7:17
For the Lamb in the center of the throne will be their shepherd. He will lead them to springs of living water, and God will wipe away every tear from their eyes.'"

Revelation 22:17
The Spirit and the bride say, "Come!" Let the one who hears say, "Come!" And let the one who is thirsty come, and the one who desires the water of life drink freely.

Isaiah 12:3
With joy you will draw water from the springs of salvation,

Isaiah 55:1-3
"Come, all of you who thirst, come to the waters; and you without money, come, buy, and eat! Come, buy wine and milk, without money and without cost! . . .

John 4:10, 14
Jesus answered, "If you knew the gift of God and who is asking you for a drink, you would have asked Him, and He would have given you living water." . . .

John 7:37, 38
On the last and greatest day of the feast, Jesus stood up and called out in a loud voice, "If anyone is thirsty, let him come to Me and drink. . . .

the fountain.

Psalm 36:9
For with You is the fountain of life; in Your light we see light.

Jeremiah 2:13
"For My people have committed two evils: They have forsaken Me, the fountain of living water, and they have dug cisterns for themselves, broken cisterns that cannot hold water.

Joel 3:18
And in that day the mountains will drip with sweet wine, and the hills will flow with milk. All the streams of Judah will run with water, and a spring will flow from the house of the LORD to water the Valley of Acacias.

freely.

Hosea 14:4
I will heal their apostasy; I will freely love them, for My anger has turned away from them.

Romans 3:24
and are justified freely by His grace through the redemption that is in Christ Jesus.

Romans 8:32
He who did not spare His own Son but gave Him up for us all, how will He not also, along with Him, freely give us all things?

1 Corinthians 2:12
We have not received the spirit of the world, but the Spirit who is from God, that we may understand what God has freely given us.

1 Corinthians 3:5, 12, 21
What then is Apollos? And what is Paul? They are servants through whom you believed, as the Lord has assigned to each his role. . . .

1 John 5:4, 5
because everyone born of God overcomes the world. And this is the victory that has overcome the world: our faith. . . .