Hello There!
The biblical requirements to be annointed (set apart & adopted as a son of God) is :
1. You have to accept that you are a sinner and cannot change your position with your will-power because even "your righteousnesses are like filthy rags" to a perfect and holy God (Is. 64: 6).
"And Jesus answered and said to them, “It is not those who are well who need a physician, but those who are sick." - Luke 5: 31
2. You must receive Jesus as your personal savior because "it is appointed unto man once to die and then judgement" (Hebrews 9: 27). Because each person will personally stand trial after they die, they need a personal Savior to pardon them.
It really is about that simple. The apostle John says quite succinctly:
But as many as received him, to them gave he power to become the sons of God. - John 1: 12