Why Did Peter Deny Jesus?
Read Matthew 26:47-75.
I believe one of the main reasons Peter denied Jesus was that, at the time, he wasn't in Christ's presence. As a result, Peter put his focus on the circumstances and began worrying about whether he would be arrested and tried too. Just a few hours earlier, he had boldly cut off the ear of a servant of the high priest, trying to protect Jesus, but Jesus had been right there then.
Peter was always bolder when he was with Jesus, sometimes too bold. But he had some pivotal moments, like when he declared, "You are the Christ, the Son of the Living God." Yet, at other times, he lacked understanding, such as when he tried to argue with Jesus that He would not suffer and die. Then Jesus rebuked him saying, "Get behind me, Satan."Peter was also bold enough to get out of the boat during the fierce storm and walk toward Jesus on the water. However, when he took his eyes off the Lord and watched the storm, he became fearful and began to sink. Now, in the courtyard, he again views the circumstances and ends up denying Christ three times. Then, when the rooster crows and he realizes what he's done, he goes away sickened with grief. Later, Jesus will restore him to the fold, and he will go on to be bold with the gospel message.