A: Because Jesus Christ is exclusive. There is only one true God, all others are false and demons.
“And whoever does not bear his cross and come after Me cannot be My disciple.
So likewise, whoever of you does not forsake all that he has cannot be My disciple.”
Luke 14:27, 33
“Therefore, my beloved, flee from idolatry.
What am I saying then? That an idol is anything, or what is offered to idols is anything? Rather, that the things which the Gentiles sacrifice they sacrifice to demons and not to God, and I do not want you to have fellowship with demons.”
I Corinthians 10:14, 19-20
“that all the peoples of the earth may know that the LORD is God; there is no other.”
I Kings 8:60
““You are My witnesses,” says the LORD, “And My servant whom I have chosen, That you may know and believe Me, And understand that I am He. Before Me there was no God formed, Nor shall there be after Me. I, even I, am the LORD, And besides Me there is no savior.”
“Therefore concerning the eating of things offered to idols, we know that an idol is nothing in the world, and that there is no other God but one. For even if there are so-called gods, whether in heaven or on earth (as there are many gods and many lords), yet for us there is one God, the Father, of whom are all things, and we for Him; and one Lord Jesus Christ, through whom are all things, and through whom we live.”
I Corinthians 8:4-6
“And this is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent.”