Yes, Christians can understand and comprehend evidence.
1. that which tends to prove or disprove something; ground for belief; proof.
2. something that makes plain or clear; an indication or sign:
His flushed look was visible evidence of his fever.
3. Law. data presented to a court or jury in proof of the facts in issue and which may include the testimony of witnesses, records, documents, or objects.
Since you mentioned Christians, you may be looking for proof of Christianity.
1. Modern and ancient historical authorities stated this:
Michael Grant, a historian and an expert on ancient classical civilization, noted: “If we apply to the New Testament, as we should, the same sort of criteria as we should apply to other ancient writings containing historical material, we can no more reject Jesus’ existence than we can reject the existence of a mass of pagan personages whose reality as historical figures is never questioned.”
Rudolf Bultmann, a professor of New Testament studies, stated: “The doubt as to whether Jesus really existed is unfounded and not worth refutation. No sane person can doubt that Jesus stands as founder behind the historical movement whose first distinct stage is represented by the oldest Palestinian community [of Christians].”
The ancient historians Tacitus, Suetonious, Pliny the Younger, Flavius Josephus and the writers of the Talmud have all mentioned him. The reference below also mentions them and other historians do acknowledge the value of their research and testimony. Some on this site have discredited them, in their mind, so I am only going to mention them, and you can make up your own mind about them.
2. Others who question Christianity do not accept the testimony of the Bible. But the Bible mentioned people who lived during Jesus' time and placed them precisely where other historical research have placed them. A pristine example of this is the testimony of the Gospel of Luke. In the first chapter, and first and second verses, he cited names and dates which establishes the exact date when a man named John the Baptist, a forerunner of Jesus, commenced his work.
Luke wrote: “In the 15th year of the reign of Tiberius Caesar, when Pontius Pilate was governor of Judea, Herod was district ruler of Galilee, Philip his brother was district ruler of the country of Ituraea and Trachonitis, and Lysanias was district ruler of Abilene, in the days of chief priest Annas and of Caiaphas, God’s declaration came to John the son of Zechariah in the wilderness.”
This detailed, precise list enables us to establish that “God’s declaration came to John” in the year 29 C.E.
The seven public figures Luke names are well-known to historians. That said, for a time certain critics did question the existence of Pontius Pilate and Lysanias. But the critics spoke too soon. Ancient inscriptions bearing the names of those two officials have been discovered, confirming Luke’s accuracy.
3. But one of the greatest and most remarkable testimonies of the existence of the ministry of Jesus and the rapid development of his congregation is found in the incidental testimony of the leaders of the Roman Empire of that time. The Christians were so successful in their preaching that more than thirty years after the death of Jesus, Christianity was represented in areas throughout the empire.
This took place not because church members were conquering territories through war, because that did not happen until the time of Constantine about 300 years later.
These first century Christians were persecuted, put in prison, tortured and even killed for their faith, but they refused to worship any other God other than Jesus' God and Father, or deny the truth of the resurrection of Jesus, which many, the scripture mentioned over 500, actually saw in the person of the living Christ after his death. 1 Corinthians 15:3-5
The five Caesars were who were living during the time of Jesus were mentioned at the actual time in which they reigned, from events of Jesus' life, such as his birth, his mention of rendering Caesar's things to Caesar, the Jewish chief priest's statement that they had "no king but Caesar" (John 19:13-16) and later, the court appeal of Paul to Caesar (likely Nero) indicated the accurate timeline of these Roman emperors.
Significantly, the historical mention of Nero's blaming the burning of Rome on the Christians, which resulted in a new violent campaign against the Christians, showed that even many years after Jesus' death, his followers were willing to be burned alive rather than deny that Jesus was not only alive and preached the good news to them, but he also was resurrected from the dead.
In conclusion, the evidence for Jesus, his ministry, his death, and the activities of his early Christian followers is more abundant than that of many people whose existence and work are readily accepted. This evidence, along with personal experience, provides the backbone on which faith in him as the Son of God and Savior of the world can be based.
For God did not send his Son into the world for him to judge the world, but for the world to be saved through him.