faith.

Hebrews 11:1-6
1 Now faith is the substance of things hoped for, the evidence of things not seen. 2 For by it the elders obtained a good testimony. 3 By faith we understand that the worlds were framed by the word of God, so that the things which are seen were not made of things which are visible. 4 By faith Abel offered to God a more excellent sacrifice than Cain, through which he obtained witness that he was righteous, God testifying of his gifts; and through it he being dead still speaks.  5 By faith Enoch was taken away so that he did not see death, “and was not found, because God had taken him”;[a] for before he was taken he had this testimony, that he pleased God. 6 But without faith it is impossible to please Him, for he who comes to God must believe that He is, and that He is a rewarder of those who diligently seek Him.