Because of his great love for us, God, who is rich in mercy, Eph 2:5 made us alive with Christ even when we were dead in transgressions—it is by grace you have been saved. And God raised us up with Christ and seated us with him in the heavenly realms in Christ Jesus (Eph 2:4-6, NIV)

As God raised Christ from the dead, that He might bring life and immortality to light through the gospel, and thus save His people from their sins, so Christ has raised fallen human beings from spiritual death, quickening them with His life, filling their hearts with hope and joy.
Rivers of Living Water
On the last and greatest day of the festival, Jesus stood and said in a loud voice, “Let anyone who is thirsty come to me and drink.
Whoever believes in me, as Scripture has said, rivers of living water will flow from within them.” By this he meant the Spirit, whom those who believed in him were later to receive. Up to that time the Spirit had not been given, since Jesus had not yet been glorified. (John 7:37-39, NIV)
As a true spring is ever supplied with water from the great deep, with which it has communication, so shall the soul of the genuine believer be supplied with light, life, love, and liberty, and all the other graces of the indwelling Spirit, from the indwelling Christ. The Jews frequently compare the gifts and influences of the Holy Spirit to water in general – to rain, fountains, wells, rivers, etc., etc. The Scriptures abound in this metaphor. Psalms 36:8, Psalms 36:9; Isa 44:3, Isa 44:4; Joel 2:23.
The gospel is to be presented, not as a lifeless theory, but as a living force to change the life. God would have His servants bear testimony to the fact that through His grace men may possess Christlikeness of character and may rejoice in the assurance of His great love. He would have us bear testimony to the fact that He cannot be satisfied until all who will accept salvation are reclaimed and reinstated in their holy privileges as His sons and daughters. {MH 99.2}
Even those whose course has been most offensive to Him He freely accepts. When they repent, He imparts to them His divine Spirit, and sends them forth into the camp of the disloyal to proclaim His mercy. Souls that have been degraded into instruments of Satan are still, through the power of Christ, transformed into messengers of righteousness and are sent forth to tell how great things the Lord hath done for them and hath had compassion on them. {MH 99.3}
Day after day He taught the people, until the last, “that great day of the feast.” The morning of this day found the people wearied from the long season of festivity. Suddenly Jesus lifted up His voice, in tones that rang through the courts of the temple: {DA 453.3}
“If any man thirst, let him come unto Me, and drink. He that believeth on Me, as the scripture hath said, out of his belly shall flow rivers of living water.” The condition of the people made this appeal very forcible. They had been engaged in a continued scene of pomp and festivity, their eyes had been dazzled with light and color, and their ears regaled with the richest music; but there had been nothing in all this round of ceremonies to meet the wants of the spirit, nothing to satisfy the thirst of the soul for that which perishes not. Jesus invited them to come and drink of the fountain of life, of that which would be in them a well of water, springing up unto everlasting life. {DA 453.4}
The priest had that morning performed the ceremony which commemorated the smiting of the rock in the wilderness. That rock was a symbol of Him who by His death would cause living streams of salvation to flow to all who are athirst. Christ’s words were the water of life. There in the presence of the assembled multitude He set Himself apart to be smitten, that the water of life might flow to the world. In smiting Christ, Satan thought to destroy the Prince of life; but from the smitten rock there flowed living water. As Jesus thus spoke to the people, their hearts thrilled with a strange awe, and many were ready to exclaim, with the woman of Samaria, “Give me this water, that I thirst not.” Joh_4:15. {DA 454.1}
Jesus knew the wants of the soul. Pomp, riches, and honor cannot satisfy the heart. “If any man thirst, let him come unto Me.” The rich, the poor, the high, the low, are alike welcome. He promises to relieve the burdened mind, to comfort the sorrowing, and to give hope to the despondent. Many of those who heard Jesus were mourners over disappointed hopes, many were nourishing a secret grief, many were seeking to satisfy their restless longing with the things of the world and the praise of men; but when all was gained, they found that they had toiled only to reach a broken cistern, from which they could not quench their thirst. Amid the glitter of the joyous scene they stood, dissatisfied and sad. That sudden cry, “If any man thirst,” startled them from their sorrowful meditation, and as they listened to the words that followed, their minds kindled with a new hope. The Holy Spirit presented the symbol before them until they saw in it the offer of the priceless gift of salvation. {DA 454.2}
The cry of Christ to the thirsty soul is still going forth, and it appeals to us with even greater power than to those who heard it in the temple on that last day of the feast. The fountain is open for all. The weary and exhausted ones are offered the refreshing drink of eternal life. Jesus is still crying, “If any man thirst, let him come unto Me, and drink.” “Let him that is athirst come. And whosoever will, let him take the water of life freely.” “Whosoever drinks of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life.” Rev 22:17; John 4:14. {DA 454.3}