시편 55:17의 Halakhah

Once the patriarchs invented these prayers, there were devout and righteous people who followed in their path and prayed Shaḥarit, Minḥa, and Ma’ariv. As King David said (Tehilim 55:17–18), “As for me, I call out to God, and the Lord saves me. Evening, morning, and noon, I express my grief and moan aloud, and He hears my voice.”