Here is my video entry to the question above
Mark 11:23-24
23
NIV:“Truly I tell you, if anyone says to this mountain, ‘Go, throw yourself into the sea,’ and does not doubt in their heart but believes that what they say will happen, it will be done for them.
24
NIV:Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours.
Hebrew 11:1
NIV:Now faith is confidence in what we hope for and assurance about what we do not see.
You can as well watch Broelisoriano video through the link below