Romans 1:18-25 ESV
18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who by their unrighteousness suppress the truth. 19 For what can be known about God is plain to them, because God has shown it to them. 20 For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse. 21 For although they knew God, they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened. 22 Claiming to be wise, they became fools, 23 and exchanged the glory of the immortal God for images resembling mortal man and birds and animals and creeping things. 24 Therefore God gave them up in the lusts of their hearts to impurity, to the dishonoring of their bodies among themselves, 25 because they exchanged the truth about God for a lie and worshiped and served the creature rather than the Creator, who is blessed forever! Amen.
I've highlighted verses 19 & 20 because they contain the crux of the argument: does the universe clearly point to an Almighty Creator, leaving us all without excuse?
(Note: this passage is commonly cited in the context of natural theology, e.g. Natural Knowledge of God: Reflections on Romans 1:18–32, The Knowledge of God in Romans 1:18–23: Exegetical and Theological Reflections)
EDIT: Another passage that echoes the same purported undeniability of God's existence:
7 Where shall I go from your Spirit? Or where shall I flee from your presence? 8 If I ascend to heaven, you are there! If I make my bed in Sheol, you are there! 9 If I take the wings of the morning and dwell in the uttermost parts of the sea, 10 even there your hand shall lead me, and your right hand shall hold me. (Psalm 139:7-10 ESV)
(which probably puts it in direct conflict with the Argument from Divine Hiddenness.)