John Calvin famously said, “Man’s nature, so to speak, is a perpetual forge of idols”. Or as Tim Keller has phrased it, an idol factory.
We are prone to worship and give our allegiance to idols (things that are not God), thus sinning by breaking the first two commandments.
In Old Testament times, Samuel said to the people of Israel:
“If you are returning to the Lord with all your heart, then put away the foreign gods and the Ashtoreth from among you and direct your heart to the Lord and serve him only, and he will deliver you out of the hand of the Philistines.” (1 Samuel 7:3)
The Israelites had succumbed to the false idols of that day and age.
They worshipped and gave their allegiance to Baal and Ashtoreth, tribal deities of the surrounding nations.
Samuel said that if the Israelites wanted to repent and turn to God their repentance must be tangible and will be difficult.