Van,
One or 2 verses don’t invalidate the rest of the Bible.
While it is clear that salvation extrinsically cannot be earned or bought, the Bible also says that not everyone will be saved and that effort and obedience is still required— but even with all that work, salvation is still a gift that no person merits.
An example of vision to describe an object is the six blind men and the elephant each focusing on only one aspect of the subject. Another example is looking only at one side of a coin while a coin is 3 dimensional. One needs to to view subjects not only in perspective but to see top, bottom and sides to really define and understand a subject and not focus on one or two scriptures and totally not look at and factor in the rest of the Bible.
Respectfully, F.