Jesus is the Coming One, Christ! Gen 49:10, Num 24:17, Deut 18:15, Dan 9:24, Jn 6:14, Isa 29:18-19, Isa 35:5-6, Isa 61:1
After being imprisoned, John the Baptist heard what Jesus had done and sent his disciples to ask if Jesus was the one who was to come, the Christ. Then Jesus told John's disciples to tell him what they had heard and what He had done. (Mt 11:2-5)
Mt 11:2 Now when John had heard in the prison the works of Christ, he sent two of his disciples, 3 And said unto him, Art thou he that should come, or do we look for another? 4 Jesus answered and said unto them, Go and shew John again those things which ye do hear and see: 5 The blind receive their sight, and the lame walk, the lepers are cleansed, and the deaf hear, the dead are raised up, and the poor have the gospel preached to them.
All the righteous in the Old Testament waited for Christ. Throughout the Old Testament, prophecies of the coming of Christ are prophesied. (Gen 49:10, Num 24:17, Deut 18:15, Dan 9:24)
Gen 49:10 The sceptre shall not depart from Judah, nor a lawgiver from between his feet, until Shiloh come; and unto him shall the gathering of the people be.
Num 24:17 I shall see him, but not now: I shall behold him, but not nigh: there shall come a Star out of Jacob, and a Sceptre shall rise out of Israel, and shall smite the corners of Moab, and destroy all the children of Sheth.
Deut 18:15 The Lord thy God will raise up unto thee a Prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken;
Dan 9:24 Seventy weeks are determined upon thy people and upon thy holy city, to finish the transgression, and to make an end of sins, and to make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up the vision and prophecy, and to anoint the most Holy.
The Old Testament also foretold the signs that Christ would perform when He comes. (Isa 29:18-19, Isa 35:5-6, Isa 61:1)
Isa 29:18 And in that day shall the deaf hear the words of the book, and the eyes of the blind shall see out of obscurity, and out of darkness. 19 The meek also shall increase their joy in the Lord, and the poor among men shall rejoice in the Holy One of Israel.
Isa 35:5 Then the eyes of the blind shall be opened, and the ears of the deaf shall be unstopped. 6 Then shall the lame man leap as an hart, and the tongue of the dumb sing: for in the wilderness shall waters break out, and streams in the desert.
Isa 61:1 The Spirit of the Lord God is upon me; because the Lord hath anointed me to preach good tidings unto the meek; he hath sent me to bind up the brokenhearted, to proclaim liberty to the captives, and the opening of the prison to them that are bound;
Jesus showed people that He was the Christ by performing the signs that Christ would perform in the Old Testament. (Jn 6:14)
Jn 6:14 Then those men, when they had seen the miracle that Jesus did, said, This is of a truth that prophet that should come into the world.