Raithere,
What you said is that God grants people physical immunity from harm based upon the strength of their belief. Ergo he does not grant this immunity to those whose belief is less strong or foundering for some reason, essentially abandoning them for this failure.
No I never said such thing. God protects you when your faith is not strong. But when you become strong in faith, He send you to work in His kingdom. Then their belief is strong and they don't fail. God never abandons anyone. Even if your faith is weak, He will help you and never abandon you.
Matthew 14:24-32
"24 But the boat was already a long distance from the land, battered by the waves; for the wind was contrary.
25 And in the fourth watch of the night He came to them, walking on the sea.
26 When the disciples saw Him walking on the sea, they were terrified, and said, "It is a ghost!" And they cried out in fear.
27 But immediately Jesus spoke to them, saying, "Take courage, it is I; do not be afraid."
28 Peter said to Him, "Lord, if it is You, command me to come to You on the water."
29 And He said, "Come!" And Peter got out of the boat, and walked on the water and came toward Jesus.
30 But seeing the wind, he became frightened, and beginning to sink, he cried out, "Lord, save me!"
31 Immediately Jesus stretched out His hand and took hold of him, and said to him, "You of little faith, why did you doubt?"
32 When they got into the boat, the wind stopped."
You also stated that one cannot test God, that is, one cannot purposefully put one's self in harms way simply to prove that God will indeed protect them and that he will, in fact, withdraw his protection in such instances. I would point out that someone who would do so is either be trying to test their own convictions or impress the opinion of others. In either case, once again it seems that God withdraws the very proof of his existence from those who are in the most need.
No. People that tests Him are people that don't believe in Him. Without the belief, it just doesn't work. You have first to believe, then it will happen. If you put Him to test, is because you don't believe, so it won't work. If you do for real and an unbeliever see this, then you will be able to impress the opinion to others. The motives here are very important.
Luke 8:49-56
"49 While He was still speaking, someone came from the house of the synagogue official, saying, "Your daughter has died; do not trouble the Teacher anymore."
50 But when Jesus heard this, He answered him, "Do not be afraid any longer; only believe, and she will be made well."
51 When He came to the house, He did not allow anyone to enter with Him, except Peter and John and James, and the girl's father and mother.
52 Now they were all weeping and lamenting for her; but He said, "Stop weeping, for she has not died, but is asleep."
53 And they began laughing at Him, knowing that she had died.
54 He, however, took her by the hand and called, saying, "Child, arise!"
55 And her spirit returned, and she got up immediately; and He gave orders for something to be given her to eat.
56 Her parents were amazed; but He instructed them to tell no one what had happened. "
And also, this is what happens when you try to test God without believing...
Acts 19:11-16
"11 God was performing extraordinary miracles by the hands of Paul,
12 so that handkerchiefs or aprons were even carried from his body to the sick, and the diseases left them and the evil spirits went out.
13 But also some of the Jewish exorcists, who went from place to place, attempted to name over those who had the evil spirits the name of the Lord Jesus, saying, "I adjure you by Jesus whom Paul preaches."
14 Seven sons of one Sceva, a Jewish chief priest, were doing this.
15 And the evil spirit answered and said to them, "I recognize Jesus, and I know about Paul, but who are you?"
16 And the man, in whom was the evil spirit, leaped on them and subdued all of them and overpowered them, so that they fled out of that house naked and wounded. "
Their motives were wrong and they didn't really believe, so that's why that happened with them.