If they worship the image of a deity, they are idolators.
How can you worship an image of God if you don't know how God looks like?
Best regards.
If you worship an image of God, you are an idolator for worshiping the image.
To make my point, many Roman Catholic churches have pictures of Jesus. Some of these depict Him on the cross. Some depict Him on after He was taken down from the cross to be buried. There are pictures of Jesus in all kinds of situations in life. Besides the pictures, there are all kinds of statues and wood carvings and engravings.
What does Jesus look like? Where is the photograph? Who will swear in court that he knows for a fact that this or that picture is really what Jesus looks like?
There are a lot of Roman Catholic worshipers that actually worship the pictures, carvings, statues and engravings. Because the Catholic Church considers that the bread and wine of the Eucharist actually becomes the body and blood of Christ, many people worship these, as well... while the priest is holding them in his hand. How many of the worshipers in the roman Catholic Church are idolators for not worshiping Jesus Christ, but rather for worshiping the image of the Deity?
Go back and re-read this and think. It is important for you.
Further, read what the Revelation in the New Testament says about the way Jesus looks. From Revelation 1:10-18:
10 On the Lord’s Day I was in the Spirit, and I heard behind me a loud voice like a trumpet,
11 which said: “Write on a scroll what you see and send it to the seven churches: to Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia and Laodicea.”
12 I turned around to see the voice that was speaking to me. And when I turned I saw seven golden lampstands,
13 and among the lampstands was someone “like a son of man,” dressed in a robe reaching down to his feet and with a golden sash around his chest.
14 His head and hair were white like wool, as white as snow, and his eyes were like blazing fire.
15 His feet were like bronze glowing in a furnace, and his voice was like the sound of rushing waters.
16 In his right hand he held seven stars, and out of his mouth came a sharp double edged sword. His face was like the sun shining in all its brilliance.
17 When I saw him, I fell at his feet as though dead. Then he placed his right hand on me and said: “Do not be afraid. I am the First and the Last.
18 I am the Living One; I was dead, and behold I am alive for ever and ever! And I hold the keys of death and Hades.