Was Calvin a sincere person? Was Luther a sincere person? Were the founders of the various Protestant denominations sincere? And yet, they disagree on ESSENTIAL doctrine. Apparently, good will and honesty do not necessarily lead to truth.
The gift of discernment is not the gift to judge the contents of the deposit of faith. If you will note the Pastorals, for example, Paul speaks of a deposit of teachings given - and he expected for that deposit to be kept unchanged. It was not subject to the whims of culture or the people. Discernment is more properly defined as determining God's Will for us in our lives, in particular, identifying an event and prayfully figuring out what God wants from us. It has nothing to do with interpreting Scriptures apart from the Church.
Do you get the impression that Paul desires a plethora of different Gospels to be preached, based on the individual feelings and "discernment" of Christians?
"I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel: Which is not another; but there be some that trouble you, and would pervert the gospel of Christ. But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed." (Gal 1:6-8)
No, despite what our society tells us about being individualistic, etc., the SCRIPTURE doesn't tell us that. It tells us to follow the Gospel GIVEN to us (not how WE interpret it). Christianity is a REVEALED religion, not a philosophy where WE determine what seems right or deny what WE determine seems wrong.
Christ is in us guiding us, but it doesn't follow that He reveals to us individually correct doctrine. That sort of protection is given to the Church, not individually. Another thing to note, of course, is that humans are STILL fighting against the flesh (as Paul notes in Romans 7). Thus, can we really know what is from Christ and what is from ourselves, when it comes to whether it is feasible to baptize infants?
Regards
It doesn't get any more contrived than your statement! Of course Christ reveals to us INDIVIDUALLY correct doctrine that's why INDIVIDUALLY we are to study, reproof, and give a reason for the hope that's within us.
Your just proving my statement when I say the Catholic church is not centered on Christ, it's centered on itself, and all the orthogonal aspects of religion.