"being himself in possession of the truth" -- That statement begins the fault in your first argument. You misunderstand; He is not "in possession of the truth," He IS the Truth. He, being "in possession of the Truth" sent "The Truth" to earth indeed. (John 14:6).
"who himself was profoundly perplexed in his outcry 'Father, why hast Thou forsaken me?' — for which no kindly resurrection can excuse the sadism. Dostoevsky posed: is the suffering of one lonely child worth the creation?" -- Jesus came to earth as both man and God -- He literally is God in the flesh. The question he asked is not a perplexed one. It is one that all of us have to ask when we realize sin. Jesus was our sacrifice, our atonement for sin. He, therefore, took on (became) our sins. This man felt the weight of sin for the first time. Without the weight of this sin, Jesus could not have been condemned to die -- This is why he died, he died for us to atone for our sins. When a person feels conviction, we realize we've been forsaken by God and need salvation, need forgiveness. Can you understand the excrutiating nature of that question? Sin means separation from God. We're talking spiritual pain, not physical pain here. It's realization -- it's sin manifesting and Him bearing it for us. Dostoevsky was a Christian, mind you. And realize God's purpose is glory -- God is love. Your question should then be, "Is creation worth the glory of God, is Creation worth multitudes of created beings entering into eternal love relationships with their creator." This same question is answered when you answer, "is it worth it to love someone when I know I risk being hurt?" The answer is always yes. God mourns for those who don't repent. It's not His will that any should die or go to hell. (2 Peter 3:9). But Just like any father, He's both merciful and just. He's going to show mercy but he's going to do what's right and after a certain point He's going to say enough. God gives the lonely children light. Jesus said, "allow the little children to come unto me, for such is the kindom of heaven."
"not to mention the worry of what is the truth" -- But He told us what the truth is... He is the Truth! despite what circumstances are, He is the Truth!
"A compassionate God surely would have created a decent existence" You said "decent." I think you said "decent" but are arguing for "perfection." We have a decent existence. People in developing nations suffer far less depression than those in developed nations. It balances out. Define Decent if I have it wrong. I think over all we've got plenty of reasons to have joy. Especially those who have joy in the Lord and store up treasure in heaven... "for all and not reduce it to some cruel test for his creatures." When things go wrong, we question God, we turn toward him. We cannot question Him without turning toward him. He says, "draw near to me and I'll draw near to you." God made you. He's closer to you than you can imagine. Within a whisper. Just call and He'll answer. Always. How is that cruel? Sounds merciful, loving, and nurturing to me.
"that is struggling as much as his creatures in attempting to make existence worthwhile." Again, "Worthwhile" is the pivotal point. Love is always worth it. We know it. We get that trait from Him. "attempt" is the wrong word.Remember, we're not puppets. Then there really would be no point or "Worth."
"it is far less blasphemous than to believe in an all knowing and all good divinity that has the superpower to rectify the horror of his creation but mysteriously refuses to do so." He is all-knowing, He is omnibenevolent, and he used his power to come to earth, resist the temptation to call 22,000 angels to rescue Him from the cross (a single angel killed 187,000 men in the old testament alone), and that same power allowed him to take on sin so we don't have to bear it. We can accept Him as our sacrifice. But because He's just, He won't force a gift on someone and won't barge down a closed door. He knocks instead. (Revelation 3:20). When we're stirred to seek truth, He'll draw near us and we'll write an article over our search for truth. Then he'll send someone your way bearing the good news. That's His love. Recognize it. John 1:12. Believing is different than receiving. We pray to receive.
Yes, Faith is Logical... and based on Evidence, too.
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