Hebrews 11:4-6

4By faith Abel offered unto God a more excellent sacrifice than Cain, through which he had witness borne to him that he was righteous, God bearing witness in respect of his gifts: and through it he being dead yet speaketh.

5By faith Enoch was translated that he should not see death; and he was not found, because God translated him: for before his translation he hath had witness borne to him that he had been well-pleasing unto God:

6And without faith it is impossible to be well-pleasing unto him: for he that cometh to God must believe that he is, and that he is a rewarder of them that seek after him.