Psalms 115:3-8 ESV Our God is in the heavens; he does all that he pleases. (4) Their idols are silver and gold, the work of human hands. (5) They have mouths, but do not speak; eyes, but do not see. (6) They have ears, but do not hear; noses, but do not smell. (7) They have hands, but do not feel; feet, but do not walk; and they do not make a sound in their throat. (8) Those who make them become like them; so do all who trust in them.
G.K. Beale, my favorite theologian, wrote a book called We Become What we Worship: A Biblical Theology of Idolatry. It is an incredibly important Bible doctrine that we all need to know well. Beale points to the verses above from Psalm 115 as his central text. Especially verse 8 – those who make them become like them.
The typical local church of our day is worshipping false gods fashioned by their own devices and imaginations. As they do so, they themselves become increasingly blind. They have eyes but do not see, ears but do not hear – just like their idols.