I was reminded of this verse by Pastor Allen Onu-Njoku.

The four living creatures and the twenty-four elders fell down before the Lamb, each one having a harp and golden bowls full of incense, which are the prayers of the saints. (Revelation 5.8 LSB)

In other words, our prayer brings nice fragrance to God's presence.

It's a good motivation to pray.

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Related: A series of prayer