“The OP author first cites a statement by Jesus telling us to do the will of the Father, and then from this statement advises us to do nothing but say unto Him Lord, Lord.”
False witness is sin. You know full well that’s not what I said or meant. It was the very people who scream “Lord, Lord” in Matthew 7 who offer their works as reason for salvation. Jesus calls them lawless. They don’t recognize their sinfulness and need for the Savior.
I would suggest running to Christ, rather than your own, incredibly low standard of what gets you into Heaven.
I would also point out that real mean don’t get their wives and children into Heaven. They point their wives and children to Christ, so that HE can get them into Heaven.
Additionally, it is those in Matthew 7 who are the mere professors lacking real faith in Christ in James 2:14.