Faith comes from the Greek word pistis, which means a deep-rooted trust and the conviction of the truth. Hebrews 11:6 illustrates what faith is when it says "Without faith it is impossible to please Him, for He that cometh to God must believe that He is, and that He is a rewarder of them that diligently seek Him." That verse teaches that there are two components of faith: (1) the belief that God exists, and (2) the belief, or trust, that He rewards those who diligently seek Him.
Faith believes God exists. It is the conviction that He exists. Faith also reverences God as God. Satan believes God is God, but Satan doesn't revere God as God. Faith in God means you believe He exists and that you reverence Him as God.
Faith not only believes in God, but it trusts God. (Hebrews 11:6 - He is a rewarder of them that diligently seek Him.)
Faith believes that God rewards those that diligently seek Him. It trusts God to reward the seeker for salvation, as well as those seeking His help in time of need. So, basically faith means a deep-rooted trust in God.
Faith also means believing God. It means to take God at His word. Hebrews 11:3 says "Through 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 do appear." Through faith, we understand that God created the heavens and the earth the way Genesis 1 records creation, because we believe God. We take Him at His word.
Faith is our foundation. Hebrews 11:1 says "Now faith is the substance of things hoped for, the evidence of things not seen." Faith is the substance... the "Setting under," or "foundation." Faith is the foundation of things hoped for... things we confidently expect. That faith can be evidence of the truth of God's word and existence. We have 2,000 years of Christians willing to die for the Gospel that prove the Gospel is real.
Faith pleases God. Without faith, it is impossible to please God (Hebrews 11:6). That verse comes right after 11:5, which says Enoch pleased God. How did Enoch please God? He must have had faith.
Faith also brings acceptance with God. Hebrews 11:2 says "By it (faith) the elders obtained a good report (acceptance)." The elders obtained God's acceptance because of their faith.
There are examples of faith in Hebrews 11. Abel is mentioned in verse 4, bringing a more excellent sacrifice, because of His faith. Abel's faith motivated him to give his best to God and worship. Our faith should motivate us to give our best to God and worship.
Abel's faith also illustrates our definition of faith (belief in God's existence and trusting Him). Abel obviously believed God existed, as did Cain. But Abel had a deep-rooted trust in God, Cain didn't.
Hebrews 11:5 discusses how Enoch's faith pleased God. Genesis 5 records how Enoch walked with God. He fellowshipped with God. He communed with Him. Enoch spent time with God, because of His faith. Do you spend time with God?
Do you have faith? Do you trust God?

