What you believe is exactly what the gnostics believed during the early church period.
Irenaeus in Against Heresies about what gnostics believed
"Animal men, again, are instructed in animal things; such men, namely, as are established by their works, and by a mere faith, while they have not perfect knowledge. We of the Church, they say, are these persons. Wherefore also [the gnostics] maintain that good works are necessary to us, for that otherwise it is impossible we should be saved. But as to themselves, [the gnostics] hold that they shall be entirely and undoubtedly saved, not by means of conduct, but because they are spiritual by nature".
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"On this account, [the gnostics] tell us that it is necessary for us [Christians] whom they call animal men, and describe as being of the world, to practise continence and good works, that by this means we may attain at length to the intermediate habitation [of heaven], but that to [the gnostics] who are called "the spiritual and perfect" such a course of conduct is not at all necessary. For it is not conduct of any kind which leads into the Pleroma [heaven], but the seed sent forth [from heaven] in a feeble, immature state, and here [on earth] brought to perfection".