Romans 3:11
there is no one who understands, no one who seeks for God.
Matthew 13:13-14
This is why I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand.
Matthew 13:19
when anyone hears the word of the kingdom and does not understand it, the evil one comes and snatches away what was sown in his heart. This is the seed sown along the path.
Romans 1:22
Claiming to be wise, they became fools,
Romans 1:28
And since they did not see fit to retain the knowledge of God, God gave them over to a base mind, to do what ought not to be done.
Romans 8:7
For the mind that is set on the flesh is hostile to God; it does not submit to God's law, nor can it do so;
Titus 3:3
For we ourselves were once foolish, disobedient, deceived, enslaved to various passions and pleasures, passing our days in malice and envy, hated by men and hating one another.
1 John 5:20
And we know that the Son of God has come and has given us understanding, that we may know him who is true; and we are in him who is true, in his Son Jesus Christ. This is the true God and eternal life.