Nothing is "external" to God. "For in Him we live, and move, and have out being,"
"What He helpless to prevent you from committing that sin?"
I do not understand your reference to "helplessness". Are you aware there are certain things God will not do?
James 1:13
Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man:
So whatever it was that caused God to allow you to sin, it must reside within God Himself, right?
I do not understand your reference to "helplessness".
Was He not able to prevent you from sinning?
Are you aware there are certain things God will not do?
James 1:13 Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man:
God will not Himself tempt man, but He most certainly will allow man to be tempted.