Caused us to be Born Again

Before I start I would like to say that understanding the following verses bring about great freedom as we place all hope in Jesus to firstly save us and secondly to keep us. It is of great benefit to read and commit to memory some of the first chapter of 1 Peter.

Thought 1:
Does Jesus cause us to be born again?

...Lord Jesus Christ, who according to His great mercy has caused us to be born again to a living hope through the resurrection of Jesus Christ from the dead. 2 Peter 1:3

Yes according to his great mercy Jesus caused us to be born again.

Thought 2:
This always begs the question. Can I be born again back into sin?

The answer to this question can be seen in the following verse.

to obtain an inheritance which is imperishable and undefiled and will not fade away, reserved in heaven for you, who are protected by the power of God.....2Peter 1:4 (analogy: John Newtons Dream)

As you can see our inheritance as a child of God is kept in heaven and protected by God and he is capable of protecting us so that we can never be born again back into sin.

Thought 3:
Well then does God cause everyone to be born again but some just don't want to come out of the "eternal womb"?

The answer to this is seen in that same verse
....According to his great mercy... 2Peter 1:3

We know that his mercy is not given to everyone for two reasons if it was then everyone would be saved and we all know this not to be true. The next is that he says in his word that he has mercy on whom he wills to have mercy. Romans 9:15

These 3 simple thoughts are so encouraging because one I know that I am born again and this a work completely of Jesus and two I can trust in the power of God for my inheritance not to whither away. I wonder why I never hear this in church?