"For he [God] is not a man, as I am, that I might answer him, that we should come to trial together. There is no arbiter between us, who might lay his hand on us both.”
"For I know that my Redeemer lives, and at the last he will stand upon the earth.”
Jesus is the unique God-man individual. There has never been another and never will be. Jesus can bridge the gap between us and God because He was God in the flesh.
Jesus was not just another teacher of good things; Jesus was God. He became flesh so that he could bridge the gap and lay his hand on both us and God to become our redeemer.
1 Corinthinans 1:30-31
"And because of him you are in Christ Jesus, who became to us wisdom from God, righteousness and sanctification and redemption, so that, as it is written, ‘Let the one who boasts, boast in the Lord.’”