Connie,
I hope this encourages and comforts you...
Rom 1:20 For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse
I think what this is telling us is that God will mature all who go through the lake of fire. The elect will be like a dad training them (babies and all mankind) up and maturing all who did not go through the fire in this age. So the babies and the mentally ill in this age will eventually experience God's purifying and cleansing Word and be matured.
Col 1:27 To whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory:
Col 1:28 Whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus
This leaves no one out. Every man (and child and baby and mentally ill person) who has ever lived and even every spirit!
Php 2:10 That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth;
Col 1:20 And, having made peace through the blood of his cross, by him to reconcile all things unto himself; by him, I say, whether they be things in earth, or things in heaven.
Everyone will train and learn and be purged.
2Ti 1:9 Who hath saved us, and called [us] with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before the world began,
Rev 20:11 And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.
Rev 20:12 And I saw the dead, small and great, stand before God; and the books of every man who has ever lived] were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.
Rev 20:13 And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works.
We are all saved by fire, it is an event that is common to everyone... at their appointed time, even babies who died in the womb.
Jeremiah 20:17 Because he did not kill me from the womb, That my mother might have been my grave, And her womb always enlarged with me
In order to be killed from the womb, you would have had to been alive in the womb.
I see the physical as a type and SHADOW. For anything to cast a shadow or to have a shadow it has to have something REAL for a shadow to be cast. for a physical body to exist, this shadow (physical body) is a type of something that is SPIRITUALLY REAL.
Psalms 23:4 Though I walk through the valley of the shadow of death, I will fear no evil, for you are with me;
I hope this was comforting to you!