Theophylact of Ohrid

"And one ran, filled a sponge with vinegar, and gave it to Him to drink," so that the bitterness of the vinegar might kill Him more quickly.

Commentary on Mark ↗

Augustine of Hippo

Among the rest that was prophesied of Him, it is also written: "They gave me gall for meat, and in my thirst they gave me vinegar to drink." How this happened, we know from the Gospel. First, they gave Him gall; He received it, tasted it, and spat it out. Thereafter, as He hung on the cross, that all that was foretold might be fulfilled, He said, "I thirst." They took a sponge filled with vinegar, bound it to a reed, and put it to His mouth; He received it, and said, "It is finished." What did that mean? …

Tractates On John 37.9 ↗

Bede

But running, one of them, and filling a sponge with vinegar, and putting it around a reed, offered him a drink, saying: Wait, let us see if Elijah will come to take him down. For which cause the Lord was given vinegar for drink, John shows more fully, saying: Afterward Jesus, knowing that all things were now accomplished, that the Scripture might be fulfilled, says: I thirst. Now there was set a vessel full of vinegar. So they filled a sponge with vinegar, and putting it upon hyssop, offered it to his mouth. …

On the Gospel of Mark ↗