Psalm 14   Here is a great truth  -  "The fool has said in his heart, 'There is no God'".  

Romans 1:18-21 comes to mind here.. "for the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness, because that which is known about God is evident within them; for God made it evident to them. For since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has been made, so that they are without excuse. For even though they knew God, they did not honor Him as God, or give thanks; but they became futile in their speculations, and their foolish heart was darkened." 

Fools are unbelievers.. they are wicked, they despise God and others, they are ignorant and egotistical. Proverbs talks a lot about the fool.. ( just to quote a few..)

1:7 "...Fools despise wisdom and instruction.." 
10:8 and 10 ".. but a babbling fool will be thrown down.." 
10:23 "Doing wickedness is like sport to a fool.." 
18:2 " A fool does not delight in understanding, but only in revealing his own mind"
20:3  ".. but any fool will quarrel.."
28: 26 "He who trusts in his own heart is a fool.. " 

 In Ecclesiastes 2:12-14  Solomon wrote, "And I saw that wisdom excels folly as light excels darkness. The wise man's eyes are in his head but the fool walks in darkness. And yet I know that one fate befalls them both." 

 Proverbs 1 reminds us that " The fear of the Lord is the beginning of wisdom..."  The wise man will "hear and increase in learning and a man of understanding will acquire wise counsel.. "

David's psalm also tells us that a fool is corrupt, wicked, without understanding, and will face the judgement of God.  The only hope for a fool is a new heart..  a heart that will fear God.. willing to listen to the Word of God... ready to lay down his stubborn self.. and seek the One who saves. 

God will be a refuge to His own.  He will restore the captives. He will bring salvation.. "out of Zion".  Hallelujah!

Father, this is the message that we must proclaim.. You are God alone!  You are God of heaven above and the earth below and there is no other!  Oh, may we believe in our hearts and confess with our mouths that Jesus Christ is Lord.. that we are saved by faith because of Your great love and grace poured out on us through the sacrifice of the Lamb of God.  We do not want to be fools, Lord, but to be wise, listening to Your voice, trusting Your Word, and obeying Your will.  We do not fear men, but we fear and live for You, Father God, by the power of Your Spirit in us and in the Name of Christ the Lord. We pray for those who are trusting in themselves, who have been deceived, and who are living in darkness.. and we ask Lord Jesus, that You would come and shine the light of salvation into our world today, that many more will seek You with all their hearts and find You.   Amen.