'Untie' in the Bible

John answered and said to them all, “As for me, I baptize you with water; but One is coming who is mightier than I, and I am not fit to untie the thong of His sandals; He will baptize you with the Holy Spirit and fire.

But the Lord answered him and said, “You hypocrites, does not each of you on the Sabbath untie his ox or his donkey from the stall and lead him away to water him?

saying, “Go into the village ahead of you; there, as you enter, you will find a colt tied on which no one yet has ever sat; untie it and bring it here.