Christ Resurrected Because He Was Sinless

For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord. (Romans 6:23 BSB, CSB, NIV)

In the Biblical context of sin as the wages of sin, the resurrection of Christ proved that He is sinless. He died for the sin of the world and was raised because death has no grip on Him, who was sinless.

He was delivered up by God's set plan and foreknowledge, and you, by the hands of the lawless, put Him to death by nailing Him to the cross. But God raised Him from the dead, releasing Him from the agony of death, because it was impossible for death to keep Him in its grip. (Acts: 2:23-24 BSB)

"God overlooked people's ignorance about these things in earlier times, but now he commands everyone everywhere to repent of their sins and turn to him. For he has set a day for judging the world with justice by the man he has appointed, and he proved to everyone who this is by raising him from the dead." (Act 17:30-31 NLT)

When the people heard this, they were cut to the heart and asked Peter and the other apostles, "Brothers, what shall we do?"
Peter replied, "Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit. This promise belongs to you and your children and to all who are far off - to all whom the Lord our God will call to Himself."
With many other words he testified, and he urged them, "Be saved from this corrupt generation." Those who embraced his message were baptized, and about three thousand were added to the believers that day. (Acts 2:37-41 BSB)

An Atheist's Confession of Faith

Only fools say in their hearts, "There is no God." They are corrupt, and their actions are evil; not one of them does good!  (Psalm 14:1, Psalm 53:1 NLT)

All men live by faith, both the just and unjust. It is impossible for men not to have a belief system. It is by faith that they have eternal life or eternal damnation because their belief system is either true or false.

Atheism and secular humanism are belief systems, just like any other religions. Here is an atheist's confession of faith by Richard Charles Lewontin (1929–2021) quoted from this article "Remembering a Biologist’s Remarkable Confession of Faith | Mind Matters".

QUOTE
In 1997, Lewontin published a review of celebrity science commentator Carl Sagan's book The Demon-Haunted World in which he blurted:

"Our willingness to accept scientific claims that are against common sense is the key to an understanding of the real struggle between science and the supernatural. We take the side of science in spite of the patent absurdity of some of its constructs, in spite of its failure to fulfill many of its extravagant promises of health and life, in spite of the tolerance of the scientific community for unsubstantiated just-so stories, because we have a prior commitment, a commitment to materialism. It is not that the methods and institutions of science somehow compel us to accept a material explanation of the phenomenal world, but, on the contrary, that we are forced by our a priori adherence to material causes to create an apparatus of investigation and a set of concepts that produce material explanations, no matter how counter-intuitive, no matter how mystifying to the uninitiated. Moreover, that materialism is absolute, for we cannot allow a Divine Foot in the door. The eminent Kant scholar Lewis Beck used to say that anyone who could believe in God could believe in anything. To appeal to an omnipotent deity is to allow that at any moment the regularities of nature may be ruptured, that miracles may happen."

Richard Lewontin "Billions and Billions of Demons" at New York Review of Books (January 9, 1997)
UNQUOTE

This is a link to a shorter version of quotation taken from A-Z Quotes | Quotes for All Occasions.

So, any scientific evidence for God would be rejected by atheists because they have "a commitment to materialism ... forced by our a priori adherence to material causes" and the belief that "materialism is absolute, for we cannot allow a Divine Foot in the door ... that anyone who could believe in God could believe in anything".

For what may be known about God is plain to them, because God has made it plain to them. For since the creation of the world God’s invisible qualities, His eternal power and divine nature, have been clearly seen, being understood from His workmanship, so that men are without excuse. For although they knew God, they neither glorified Him as God nor gave thanks to Him, but they became futile in their thinking and darkened in their foolish hearts. (Romans 1:19-21 BSB)

Professing to be wise, they became fools, and they changed the glory of the immortal God into a likeness of an image of mortal man and birds and quadrupeds and creeping things. (Romans 1:22-23 BLB)