Has "Modern" scholarship, over the past few centuries, whittled the Gospel down in just the same way? As much wisdom as God has given us in the Bible, as carefully as He has stressed that this is His (singular) Word, and as richly as He has blessed the Church with insights into what He has revealed to us we presume that as long as we fulfill some "bare minimum requirements" that nothing else is expected, and no greater blessing available than what we (presume to) already have. Do we have it? What does it look like?
For a starting place, a suggestion: First, that we each read the Scriptures, in faith (James 1), that is, faithfully, ready to believe and obey what the Lord shows us. Second, that we begin to read some of the really early writers, comparing their understanding of the Gospel with our own. This sort of exercise, besides discovering their hidden treasures, brings us closer to understanding the world to which the Scriptures were first written. Third, that our study be always from a starting-place of worship, remembering that it is the Spirit of the Living God Who must be our teacher, and not merely our own "great wisdom." And in all these things, let it be done in the context of close fellowship with other Believers who share that intention. Doing these three things can make the difference between full salvation and a tenuous, "bare bones" religion!