Exodus 20:4-5
The commandment forbids making images in order to bow down to them or serve them. The sin is idolatrous worship.
The Bible condemns worshiping idols. Christians do not worship the cross. The cross is a symbol that points to Christ’s sacrifice, salvation, and victory.
The argument usually points to Exodus 20 and says that a physical cross must not be displayed because it is a graven image or pagan object.
A cross used as a reminder of Christ’s sacrifice is not the same thing as worshiping an idol. Christians worship God, not wood, metal, jewelry, or church architecture.
The commandment forbids making images in order to bow down to them or serve them. The sin is idolatrous worship.
“For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.”
“God forbid that I should glory, save in the cross of our Lord Jesus Christ.”
Exodus 20 forbids idolatry: making an image, bowing down to it, and serving it as a god. Christians should never worship any object. But a symbol that points to a biblical truth is not automatically an idol. The Bible itself uses memorials, signs, and visible reminders, including the Passover meal, stones of remembrance, baptism, and the Lord’s Supper.
An app icon on an iPhone is not the app itself. The icon does not do the work. It only represents and points you to the app. When you tap the icon, the app opens and does the actual work. In the same way, the cross is not the Savior. The cross does not forgive sins. The cross does not answer prayer. The cross is an object that points the heart and mind to Jesus Christ, who died for sinners and rose again.
Biblical Christians worship the Father, through the Son, by the Holy Spirit. A cross on a wall, necklace, Bible cover, or church sign is not the object of faith. The object of faith is Jesus Christ Himself.
Many Protestant Christians avoid crucifixes showing Jesus still on the cross, because Jesus is not still dead on the cross. He is risen. Protestants also commonly reject statues of saints as objects of devotion. That concern is reasonable. But rejecting the worship of images is not the same as declaring every plain cross an idol.
Do not worship the cross. Do not pray to the cross. Do not treat it as magic. But do not let anyone confuse a Christian symbol with idol worship when your faith is in the living Christ.