Mark 6:50
For they all saw him, and were troubled. And immediately he talked with them, and saith unto them, Be of good cheer: it is I; be not afraid.
For they all saw him, and were troubled,.... Had it been only seen by one, it might have been thought a fancy, and the effect of mere imagination; but as every one saw it, it was out of all doubt that so it was, and which gave them the greater concern:
And immediately he talked with them; as soon as they saw him, "that very moment", as the Syriac renders it; that so by hearing his voice their fears might be allayed:
and saith unto them, Be of good cheer, it is I, be not afraid;
See Gill on "Matthew 14:27".