A psalm is a sacred song or poem meant to be sung in worship, especially one from the Book of Psalms in the Bible.

The Book of Psalms contains 150 of these ancient songs, many traditionally attributed to King David of Israel, who lived about 3,000 years ago. Some psalms are joyful celebrations, like Psalm 100: “Make a joyful noise to the Lord, all the earth!” Others express sadness, ask for help, or give thanks. Psalm 23, which begins “The Lord is my shepherd,” is one of the most famous and has comforted people for thousands of years.

Churches and synagogues still sing or recite psalms during worship services. The word has also broadened to mean any sacred song in general. When you hear someone refer to singing psalms, they mean performing these ancient religious songs that have connected believers across countless generations.

The “p” in psalm is silent, so it sounds like “sahm” when you say it out loud.