Mark 6:50
becoming [very] frightened when they saw Him. But He immediately spoke to them and said, "Take courage, and do not be afraid, it is I."
Matthew 14:27
Just then Jesus called out to them, "Take courage and do not be afraid; it is I."
Luke 24:38-41
Then Jesus said to them, "Why are you [so] upset? And why are you having doubts [about me] in your minds?
John 6:19-20
And when the disciples had rowed about three or four miles, they saw Jesus walking on the [surface of the] water. They became afraid as Jesus got closer to their boat.
John 20:19-20
So, when it was evening on that day, [which was] the first day of the week [i.e., Sunday] and the doors [of someone's house], where the disciples were gathered, were closed [i.e., probably locked] for fear of the Jewish authorities, Jesus came and stood among them. [Note: Probably Jesus passed through the closed door miraculously]. He said to them, "May there be peace in your hearts."