fredman,

Obviously, you have rejected the scriptural doctrine justification by faith alone to pursue non-scriptural teachings born of man's reason.

With regard to eternal security, I did answer the question: Romans 11:33. I also said that baptism in a trinitarian formula is always efficacious but it is not always beneficial. Whether infant or adult, it must be received by faith alone.

Whether the baptized hellion ever believed is not revealed to us. We should not inquire curiously after much matters.

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since God has reserved this mystery for His wisdom, and has revealed nothing to us concerning it in His Word, much less commanded us to investigate it with our thoughts, but has earnestly discouraged us therefrom, Rom. 11, 33ff , we should not reason in our thoughts, draw conclusions, nor inquire curiously into these matters, but should adhere to His revealed Word, to which He points us.

Thus without any doubt God also knows and has determined for every one the time and hour of his call and conversion [and when He will raise again one who has lapsed]. But since this has not been revealed to us, we have the command always to keep urging the Word, but to entrust the time and hour [of conversion] to God, Acts 1, 7.

Formula of Concord, Solid Declaration, Election