The following verses were written by David and describe how awful and let down he must have felt. David is broken and distraught but he calls out to the one who can help him.
You know how they talk about me, and how they so shamefully dishonour me. You see them all and know what each has said. Their contempt has broken my heart; my spirit is heavy within me. If even one would show some pity, if even one would comfort me! For food they gave me gall; for my awful thirst they offered vinegar. Psalm 69:19-21, TLB.
The following is from the House to House website. “As He neared death, Jesus said, I thirst. One of the prominent effects of crucifixion was overpowering thirst because of the loss of body fluids through open body wounds and perspiration. David prophesied this Messianic event, saying They gave me also gall for my meat; and in my thirst they gave me vinegar to drink. John understood that Jesus was conscious of fulfilling scripture. After this, Jesus knowing that all things were now accomplished, that the scripture might be fulfilled, saith, I thirst. One of the great heresies in the early church was the idea that Jesus was not really human, but as Jesus fulfilled this scripture, He showed that He was truly human and truly deity.
Jesus knew that everything was now finished, and to fulfil the Scriptures said, “I’m thirsty.” A jar of sour wine was sitting there, so a sponge was soaked in it and put on a hyssop branch and held up to his lips. John 19:28-29, TLB.
As we consider the seven sayings on the cross one of the key things to learn is that Jesus was truly man and truly divine. He suffered as any other human, yet He was without sin and as the Son of God, He took the punishment and shame due to us upon Himself. We are set free for eternity as we follow and believe in the One who was sent for our salvation.