And Aaron shall burn fragrant incense on it. Every morning when he dresses the lamps he shall burn it, and when Aaron sets up the lamps at twilight, he shall burn it, a regular incense offering before the LORD throughout your generations.
Exodus 30:7-8 ESV

The Menorah is a 3D metaphor of the Holy Spirit and the incense altar is a metaphor of our prayers and worship. Prayer, worship, and the presence of the Holy Spirit go together. The Spirit inspires and guides prayer, and also prays on our behalf. See Romans 8:26-27. Conversely, our prayers and worship invite the presence of the Spirit.