"Is Anybody up There?" joke

A man was walking in the mountains just enjoying the scenery when
he stepped too close to the edge of the mountain and started to
fall. In desperation he reached out and grabbed a limb of a
gnarly old tree hanging onto the side of the cliff. Full of fear
he assessed his situation. He was about 100 feet down a shear
cliff and about 900 feet from the floor of the canyon below. If
he should slip again he'd plummet to his death. Full of fear, he
cries out, "Help me!" But there was no answer. Again and again he
cried out but to no avail.
Finally he yelled, "Is anybody up there?"
A deep voice replied, "Yes, I'm up here."
"Who is it?"
"It's the Lord"
"Can you help me?"
"Yes, I can help."
"Help me!"
"Let go."
Looking around the man became full of panic. "What?!?!"
"Let go. I will catch you."
"Uh... Is there anybody else up there?"