Hebrews 11:1, 17, 19

Hebrews 11:1 ASV

Now faith is assurance of things hoped for, a conviction of things not seen.

Hebrews 11:17 ASV

By faith Abraham, being tried, offered up Isaac: yea, he that had gladly received the promises was offering up his only begotten son

Hebrews 11:19 ASV

accounting that God is able to raise up, even from the dead; from whence he did also in a figure receive him back.