John 10:1-2 NASB95
"Truly, truly, I say to you, he who does not enter by the door into the fold of the sheep, but climbs up some other way, he is a thief and a robber. "But he who enters by the door is a shepherd of the sheep.

Numbers 27:16-17 NASB95
"May the LORD, the God of the spirits of all flesh, appoint a man over the congregation, who will go out and come in before them, and who will lead them out and bring them in, so that the congregation of the LORD will not be like sheep which have no shepherd."

John 10:3-4 NASB95
"To him the doorkeeper opens, and the sheep hear his voice, and he calls his own sheep by name and leads them out. "When he puts forth all his own, he goes ahead of them, and the sheep follow him because they know his voice.

Numbers 27:21 NASB95
"Moreover, he shall stand before Eleazar the priest, who shall inquire for him by the judgment of the Urim before the LORD. At his command they shall go out and at his command they shall come in, [both] he and the sons of Israel with him, even all the congregation."

Jesus is identifying Himself as the new Moses, the prophet like Moses

Deuteronomy 18
15 “The Lord your God will raise up for you a prophet like me from among you, from your brothers—it is to him you shall listen— 16 just as you desired of the Lord your God at Horeb on the day of the assembly, when you said, ‘Let me not hear again the voice of the Lord my God or see this great fire any more, lest I die.’ 17 And the Lord said to me, ‘They are right in what they have spoken. 18 I will raise up for them a prophet like you from among their brothers. And I will put my words in his mouth, and he shall speak to them all that I command him. 19 And whoever will not listen to my words that he shall speak in my name, I myself will require it of him.

Ezekiel 34:1-10 Prophecy against the Shepherds of Israel

Ezekiel 34:11-12 NASB95
For thus says the Lord GOD, "Behold, I Myself will search for My sheep and seek them out. "As a shepherd cares for his herd in the day when he is among his scattered sheep, so I will care for My sheep and will deliver them from all the places to which they were scattered on a cloudy and gloomy day.

Ezekiel 37:15-ff Reunion of Judah and Israel

Ezekiel 37:24 NASB95
"My servant David will be king over them, and they will all have one shepherd; and they will walk in My ordinances and keep My statutes and observe them.

John 10:16 NASB95
"I have other sheep, which are not of this fold; I must bring them also, and they will hear My voice; and they will become one flock [with] one shepherd.

John 11:49-52 NASB95
But one of them, Caiaphas, who was high priest that year, said to them, "You know nothing at all, nor do you take into account that it is expedient for you that one man die for the people, and that the whole nation not perish." Now he did not say this on his own initiative, but being high priest that year, he prophesied that Jesus was going to die for the nation, and not for the nation only, but in order that He might also gather together into one the children of God who are scattered abroad.