“And Jesus came and spoke to them, saying, ‘All authority has been given to Me in heaven and on earth’” (Matthew 28:18)
Everyone, except God, has an authority over him. But before we can proceed, we need to understand the concept or a definition of authority. It has two parts to it: 1. The right to say so, and 2. The power to enforce what is said.
For example, the speed-limit sign is given by the highway authority (or some similar department). But the power to enforce it is the police – – you know, the car with the red cherry on top!

When it comes to the weightiest matter on earth – – your soul’s destiny – – there can only be one authority – – the one who has the right to say where you’ll spend eternity, as well as the power to enforce it! Now, we are left with only one of two options – – either this authority is human (and many falsely believe that they are the decision-makers); or this authority is the living God of the Bible! The problem with the first view is that humans are fallible, incapable, and depraved. Furthermore, they do not have the power to enforce their choices. They are NOT God! And, of course, that leaves us with the only One who has the say-so and the absolute power to enforce His Word!
His name is Jesus Christ, the Son of the living God! HE, God the Father, has bestowed this authority on Christ, who has the right to say so, and He alone certainly has all the power in this universe to enforce His Word (the Bible)!

Dear friend, you are not, cannot and will not be your own authority. Either the God of the Bible is your authority, or it is man-made, mind-concocted, or is vainly sought by God’s powerless opponents. Want to go to Heaven? God says, “Believe on the Lord Jesus Christ (alone), and you will be saved!” God said so, and HE WILL enforce it!
But as many as received Him, to them He gave the right to become children of God, to those who believe in His name: who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God. (John 1:12–13)