John 10:25
Jesus answered them, I told you, and ye believed not: the works that I do in my Father’s name, they bear witness of me. Jesus answered them, I told you, and ye believed not: the works that I do in my Father’s name, they bear witness of me.
John 10:25 belongs to Jesus' teaching that He is the true Shepherd and keeper of God's flock. The Shepherd prophecies of Isaiah and Ezekiel apply to Christ, as do David's words about the Lord as Shepherd. His mission as Shepherd stands in contrast to Israel's leaders, who drove away a man whom He was drawing to Himself.
He had already told the Jews who He was, but they did not believe Him. The works He did in His Father's name bore witness to Him, showing that He is the Christ and the Son of God and confirming His claim.
Those works were done by the power of God and carried power to give life. As part of Satan's special effort to separate the Father and the Son, the Jews were blinded so they could not recognize and acknowledge Jesus. They refused to have anything to do with Him and refused to recognize God's power in His mighty miracles, saying He did them through Satan while exalting the law and the Father and rejecting the Son.