Hebrews 11:2-4

2For by it the elders obtained a good report. 3Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which are visible.

4By faith Abel offered to God a more excellent sacrifice than Cain, by which he obtained the testimony that he was righteous, God testifying of his gifts: and by it he being dead yet speaketh.1