For me there are a few things that cause me to not question my faith:
- The nature of love and forgiveness revealed by Jesus, and his disciples
- Miracles occurring in my life as I have sought Jesus according to scripture
- Internal consistency of my religion discussed below (posted from a message I posted else where):
So what I want to do is show the continuity of Christianity, or its flow from the OT through the new.
So what was the OT law? It was a set of commands laid down by God. But not just commands, there was also provision for forgiveness to be offered but only under strict condition. What were the conditions? Animal sacrifices had to be offered for sin. As an example:
Num 6:14-16 And he shall offer his offering unto the LORD, one he lamb of the first year without blemish for a burnt offering, and one ewe lamb of the first year without blemish for a sin offering, and one ram without blemish for peace offerings, ….And the priest shall bring
them before the LORD, and shall offer his sin offering, and his burnt offering:
So we see that sacrifices were needed to atone for sin. Without the shedding of these sacrifices there was no atonement for sin.
We see latter prophets predicted that a man would come who would be an offering for sin (this was 700 years before Christ), in the same way animals were sacrificed.
Isa 53:1-12 Has anyone believed us or seen the mighty power of the LORD in action? Like a young plant or a root that sprouts in dry ground, the servant grew up obeying the LORD. He wasn't some handsome king. Nothing about the way he looked made him attractive to us. He was hated and rejected; his life was filled with sorrow and terrible suffering. No one wanted to look at him. We despised him and said, "He is a nobody!"
He suffered and endured great pain for us, but we thought his suffering was punishment from God. He was wounded and crushed because of our sins; by taking our punishment, he made us completely well. All of us were like sheep that had wandered off. We had each gone our own way, but the LORD gave him the punishment we deserved. He was painfully abused, but he did not complain. He was silent like a lamb being led to the butcher, as quiet as a sheep having its wool cut off. He was condemned to death without a fair trial. Who could have imagined what would happen to him?
His life was taken away because of the sinful things my people had done. He wasn't dishonest or violent, but he was buried in a tomb of cruel and rich people.
The LORD decided his servant would suffer as a sacrifice to take away the sin and guilt of others. Now the servant will live to see his own descendants. He did everything the LORD had planned. By suffering, the servant will learn the true meaning of obeying the LORD. Although he is innocent, he will take the punishment for the sins of others, so that many of them will no longer be guilty. The LORD will reward him with honor and power for sacrificing his life. Others thought he was a sinner, but he suffered for our sins and asked God to forgive us.
When Jesus came to earth. John the Baptist said:
John_1:29 The next day, John saw Jesus coming toward him and said: Here is the Lamb of God who takes away the sin of the world!
So what is John referring to here, he was saying Jesus would be the lamb sacrifice to take away sins.
Jesus was crucified as an offering for sins, he died, and rose again.
The disciples described his death as being the same as the sacrifices in the old Testament.
Heb 9:19-28 Moses told the people all that the Law said they must do. Then he used red wool and a hyssop plant to sprinkle the people and the book of the Law with the blood of bulls and goats and with water. He told the people, "With this blood God makes his agreement with you." Moses also sprinkled blood on the tent and on everything else that was used in worship. The Law says that almost everything must be sprinkled with blood, and no sins can be forgiven unless blood is offered. These things are only copies of what is in heaven, and so they had to be made holy by these ceremonies. But the real things in heaven must be made holy by something better. This is why Christ did not go into a tent that had been made by humans and was only a copy of the real one. Instead, he went into heaven and is now there with God to help us. Christ did not have to offer himself many times. He wasn't like a high priest who goes into the most holy place each year to offer the blood of an animal. If he had offered himself every year, he would have suffered many times since the creation of the world. But instead, near the end of time he offered himself once and for all, so that he could be a sacrifice that does away with sin. We die only once, and then we are judged. So Christ died only once to take away the sins of many people. But when he comes again, it will not be to take away sin. He will come to save everyone who is waiting for him.
So we see a flow from the Old to the New Testament, by which God revealed the way to be forgiven from sin.