Everything in creation is upheld by the word of God.

God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets, hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds….Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.” – ( Hebrews 1:1-2, 11:3)

Except God says it, it can never be. No demon, witch or wizard can afflict someone if God by His word did not allow them, either through breaking His word (sin) or by God’s sovereign design; this latter, leads to promotion, as in the case of Joseph in the hand of his brothers, Job and his ordeals, Abraham’s descendants in Egypt.
In all, God’s word is “aye and amen”, “upholding all things with the word of His power”.
Learning to trust His word and be anchored in it, is Faith.
In Romans 4:17-22, Abraham was fully persuaded; he was thoroughly convinced!
Being persuaded is to come to the point where one stops doubting, either by putting our education, tradition, connection or achievement, above the word of God. To be persuaded means to stop doubting and start believing; even if you do not understand it!
Like everyone else, Abraham was affected by the gravitational pull and influence of nature. With his ageing body and Sarah’s dead womb, he kept believing! Why? “Because God said!”
He faced the fact that he naturally may not have children. Ahead of him naturally there was no hope. But he “hoped against hope”!
Even if witches, wizards or demons were responsible for their situation, but “because God said”! A life of faith does not look at nature. Abraham did not stagger in unbelief. Why? “Because God said!”   The One that created nature said! The One that can reverse the ageing process said! He knew that God would do what He said He would do, so he stayed rooted in the word of God!
It is not just the situations or the circumstances of life but the ONE who is able to do all things! God! What has He said to you? Stick to His word for this is Faith, and this is pleasing to Him.
“But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.” – (Hebrews 11:6)