The simplest are the most important:
And one of them, a lawyer, asked him a question to test him. “Teacher, which is the great commandment in the Law?” And he said to him, “You shall love the Lord your God with all your heart and with all your soul and with all your mind. This is the great and first commandment. And a second is like it: You shall love your neighbor as yourself. On these two commandments depend all the Law and the Prophets.”
— Matthew 22:35-40
But there’s nothing there about professing belief to other people.
There is Matthew 6:6, though:
But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly.
What’s your point? I wrote nothing of the sort. Are you trying to attribute that position to me?
I’m merely addressing your question: