Things not seen
Why do we have to pray to God about all the promises in his word? He has promised so why can’t He just do it. It is again this word faith which everything pivots around whether we like it or not, In Hebrews 11:1 we can dig for the treasures buried there; “Now faith is the assurance (title deed, confirmation) of things hoped for (divinely guaranteed), and the evidence of things not seen [the conviction of their reality—faith comprehends as fact what cannot be experienced by the physical senses].”
First; faith is assurance of things hoped for, “things hoped for” is all the promises in the Bible, however, before that, you have to establish the foundation, namely that all the words in the Bible are from God, every single one of them, you cannot blame the translations, because you can always go to the Interlinear Bible and look at the Hebrew text in The Old Testament and Greek in The New Testament. First then when you have decided in your heart that the words in the Bible are from God, then you can start digging for the true treasures buried in the Word.
We cannot sense them
Back to faith in Hebrews 11:1; Assurance is what happens in your heart, not in your brain, it is influenced of what you daily are thinking about, but for the assurance to be established in your heart it takes time, the longest distance you ever “walk” in your life is from your brain down to your heart. “and evidence of things not seen” it doesn’t say things that are not, no those things not seen are in a perfect shape and in a perfect world, not like this imperfect world that we can see. Our problem is that we cannot sense them, not see them, not touch them and we don’t like that, we want to confirm it by our senses, however, that is not faith.