Verbal Confession and Salvation

Isn't it true that if someone says Jesus is Lord that they are saved? First of all "Lord" must be defined.

lord
lôrd/
noun
1.
someone or something having power, authority, or influence; a master or ruler.
"lord of the sea"

So by definition a Lord is someone whose will cannot be thwarted. (THIS IS VERY IMPORTANT, BECAUSE THERE ARE MANY WHO SAY "LORD, LORD" THAT WILL BE CAST OUT BECAUSE THEY FAILED RO ACKNOWLEDGE JESUS LORDSHIP AS DEFINED.) If someone confesses Jesus as LORD, are they not saved?

that if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved.
Ro 10:9 NKJV

A verbal confession is made from the abundance of the heart.

A good man out of the good treasure of his heart brings forth good; and an evil man out of the evil treasure of his heart brings forth evil. FOR OUT OF THE ABUNDANCE OF THE HEART HIS MOUTH SPEAKS.
Lu 6:45 NKJV

Our hearts are desperately wicked from birth.

“The heart is deceitful above all things, And desperately wicked; Who can know it?
Jer 17:9 NKJV

So, unless God changes a person's heart, the true confession cannot even be made. God must regenerate a man first, then the verbal declaration is the proof of the work of God.

I will give you a new heart and put a new spirit within you; I will take the heart of stone out of your flesh and give you a heart of flesh. I will put My Spirit within you and cause you to walk in My statutes, and you will keep My judgments and do them.
Eze 36:26‭-‬27 NKJV