Job made this confession in my title (cf. Job 19:25) and showed his ultimate faith in God that in his flesh he shall see God. Yes, the resurrection was even fact in the OT: Psalm 49:15, "But God will redeem my soul from the power of the grave...." Also, in Hosea 13:14, "I will ransom them from the power of the grave; I will redeem them from death." As it says in 1 Cor. 15:55, "O death where is thy sting? O grave where is thy victory?" Death is finally defeated and we need not fear it! Martha told Jesus that she shall see Lazarus at the resurrection! (cf. John 11:24). ".... I kill and I make alive..." (cf. Deut. 32:39).
But the doctrine was not fully realized nor fulfilled, or did it have a good reason to be believed, till Jesus conquered the grave by rising from the dead as the definitive proof of His deity (cf. Romans 1:4; Acts 17:31). It was the skeptical Sadducees that denied the resurrection. Paul truly said that if there is no resurrection we are a people most to be pitted and are still in our sins! (cf. 1 Cor. 15:19).
But the resurrection is a known historical fact with much compelling, though circumstantial evidence to verify it. It is said that the resurrection is more variously proved than any even in antiquity with many types of evidence that is. Dr. Luke says that there were "many infallible proofs," (cf. Acts 1:3). History rarely has direct evidence. We have documents, records, testimony, and the witness of present believers as evidence. But just believing it is history, not salvation. As Josh MacDowell said, "Either the resurrection is the most wonderful event in history or its cruelest, biggest hoax."
The resurrection is not only the point of Christianity but its focus and fulcrum, without it, we disembowel the faith and make it just another religion. Denying the facts makes you out to be living in denial! We must not only accept it as a historical fact but we must receive the living Lord into our hearts; i.e., believe it in our hearts! Christ must not only be risen historically but personally. The resurrection is indeed the central fact of history and its hope.
I confess and admit it takes faith to believe this for faith is what pleases God (cf. Heb 11:6). Now there is never enough evidence to convince a person who doesn't want to believe. Israel rejected the LORD and Moses though there were many miracles (cf. Psalm 78:32). Jesus said in John 7:17 that anyone willing to do His will shall know; there's the rub! Jesus had observed in John 12:37 that even though the stubborn Pharisees had seen many signs or miracles, they "would not believe," not that they could not believe; for the heart of the matter is that it's a matter of the heart--where was their heart if they even had one still?
The resurrection becomes a reality to believers because Jesus takes up residence in our hearts upon accepting this and we become transformed persons becoming renewed in Christ's image. The transformation that took place in the apostles after they saw the Lord is the strongest evidence for His resurrection. You must want it to be true though! But the good news is that we can taste that Jesus is good (cf.1 Pet. 2:3) and as Psalm 34:8 says, "Taste and see that the LORD is good." We are then becoming satisfied customers or happy campers in the Lord. Soli Deo Gloria!