“He who did not spare His own Son, but gave Him up for us all—how will He not also, along with Him, graciously give us all things?” Rom 8:32.
This doesn’t need an explanation.
Just take that in.
Dwell on that for a minute.
Sit where you are and just process those words.
And if they don’t give you such incredible comfort, if they don’t make you let out a sigh of relief, if they don’t prompt you to praise and thank this gracious Giver, then I don’t know what will.