The second commandment explains how we should worship the one true God. It forbids us from using images or idols as part of our worship, as these only diminish our perception of God's majesty and holiness.

Exodus 20:4–6

4 “You shall not make for yourself a carved image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth. 5 You shall not bow down to them or serve them, for I the LORD your God am a jealous God, visiting the iniquity of the fathers on the children to the third and fourth generation of those who hate me, 6 but showing steadfast love to thousands¹ of those who love me and keep my commandments.

Footnotes

[1] 20:6 Or to the thousandth generation

(ESV)