Romans 1:18-20

For [God does not overlook sin and] the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who in their wickedness suppress and stifle the truth, because that which is known about God is evident within them [in their inner consciousness], for God made it evident to them. For ever since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through His workmanship [all His creation, the wonderful things that He has made], so that they [who fail to believe and trust in Him] are without excuse and without defense. [Ps 19:1-4; Eph 2:10]