God could have chosen other ways, but He decided that we should believe, as long as we still live here on earth. We believe; we don’t see yet.

“For we live by faith, not by sight.” (2 Corinthians 5:7; NIV)
And we can be sure that what God is telling us is happening. The Bible is the proof. God cannot lie. What we can’t yet see with our physical eyes will manifest. Because everything God says happens exactly how He promises. Let’s not forget: God only had to speak and the entire universe was born. • God is the Creator
What does God say? This: “The Lord himself goes before you and will be with you; he will never leave you nor forsake you. Do not be afraid; do not be discouraged.” (Deuteronomy 31:8; NIV)
You, too, can say this promise.
And believe it. Because it happens to you according to your faith.
And when doubts come?
It would be surprising if that were not the case, because devils and demons are trying their best to torpedo our beliefs.
Then keep saying the promise above.