What does the altar of incense symbolize in relation to prayer?

In Exodus 30, the altar of incense represents the prayers of the saints ascending to God's presence, interceded by Christ. Revelation 8:3-4 elaborates on this imagery, revealing an angel who offers incense along with the prayers of the saints, signifying that our prayers are not merely our own expressions but are made acceptable through the intercession of Christ. This underscores that we can approach God with confidence, knowing that our prayers are received because of Christ's perfect righteousness, ensuring they are pleasing to God.