Ask questions to avoid the common situation of people happily using the same words to talk about the 'said to be the same' thing, while missing that they do not define the words the same. Further, what is the connotation of the denotation?
Humanity, God and faith are concept words without any objective "is-ness" to which one can point and none of the five primary senses can reveal them.
Humanity may refer to a collective-concept of multiple people or to an attitude (way of being) manifested (or not) by individuals.
And don't get me started on "God" as a word/concept.
Faith too fails to clearly define itself. Many are those who lack faith in themselves, always expecting to fall down, while they walk in the faith that gravity never goes away and they need not fear that their next step will be into an up-fall.
As I am taught, the essence of humans is that they exist and are conscious. Those who have 'faith' in God say God exists and is conscious. Generally, God is also said to be infinite, limitless, unbounded, unconstrained.
Are existence and consciousness separate qualities that God may or may not have? Are not both more like essential nature than 'add-ons'?
Now my take on the OP question: An infinite-existent-consciousness (God) can not exist along with a separate outside, other-than, not-god. Any 'other' something existing separate from the infinite, negates the infinity (limitlessness).
I have total faith in my conscious existence, needing no proof or second opinion. My existence nature and my conscious nature are self-evident.
I am not certain I have the same faith in the humanity of humanity.
However if God is conscious-being, then faith is not needed because conscious-being can not be negated.
I thank the unseen and unknown for giving me a heart.