John 10:8
Jesus said All that ever came before me are thieves and robbers: but the sheep did not hear them.

Who are the thieves that came before Jesus, which the sheep hear them not? ?

WHO ARE THE THIEVES

since jews who are audience to jesus understand what he mean that many false teachers and prophet have come before claiming to be messiah and the prophet. let here what they have to say .

ACTS 5:34-39

34 Then stood there up one in the council, a Pharisee, named Gamaliel, a doctor of the law, had in reputation among all the people, and commanded to put the apostles forth a little space;
35 And said unto them, Ye men of Israel, take heed to yourselves what ye intend to do as touching these men.
36 For before these days rose up Theudas, boasting himself to be somebody; to whom a number of men, about four hundred, joined themselves: who was slain; and all, as many as obeyed him, were scattered, and brought to nought. {obeyed: or, believed}
37 After this man rose up Judas of Galilee in the days of the taxing, and drew away much people after him: he also perished; and all, {even} as many as obeyed him, were dispersed. {obeyed: or, believed}
38 And now I say unto you, Refrain from these men, and let them alone: for if this counsel or this work be of men, it will come to nought:
39 But if it be of God, ye cannot overthrow it; lest haply ye be found even to fight against God.

is clear from the verse above that many false teachers and false messiah have rise before jesus , they are all killed by Pharisees, this are people jesus refer to thieves and robbers, sheep refuse to listening to .

good...