John 7:37-38

On the last and greatest day of the Feast, Jesus stood and said in a loud voice, "If anyone is thirsty, let him come to me and drink. Whoever believes in me, as the Scripture has said, streams of living water will flow from within him."

On the last and greatest day of the Feast
Leviticus 23:34-36 "Say to the Israelites: 'On the fifteenth day of the seventh month the LORD's Feast of Tabernacles begins, and it lasts for seven days. The first day is a sacred assembly; do no regular work. For seven days present offerings made to the LORD by fire, and on the eighth day hold a sacred assembly and present an offering made to the LORD by fire. It is the closing assembly; do no regular work.'"
Deuteronomy 16:13 Celebrate the Feast of Tabernacles for seven days after you have gathered the produce of your threshing floor and your winepress.
Deuteronomy 16:15 For seven days celebrate the Feast to the LORD your God at the place the LORD your God will choose. For the LORD your God will bless you in all your harvest and in all the work of your hands, and your joy will be complete.

If anyone is thirsty let him come to me and drink
Isaiah 55:1 "Come, all you who are thirsty, come to the waters; and you who have no money, come, buy and eat! Come, buy wine and milk without money and without cost."
Revelation 22:17 The Spirit and the bride say, "Come!" And let him who hears say, "Come!" Whoever is thirsty, let him come; and whoever wishes, let him take the free gift of the water of life.

Whoever believes in me
John 3:15 "... that everyone who believes in him will have eternal life."

As the Scripture has said
Isaiah 58:11 "The LORD will guide you always; he will satisfy your needs in a sun -scorched land and will strengthen your frame. You will be like a well-watered garden, like a spring whose waters never fail."

streams of living water
John 4:10 Jesus answered her, "If you knew the gift of God and who it is that asks you for a drink, you would have asked him and he would have given you living water."

will flow from within him
John 4:14 "... but whoever drinks the water I give him will never thirst. Indeed the water I give him will become in him a spring of water welling up to eternal life."

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.