The Jewish custom of reading lessons at worship is outlined, as it is for early Christian assemblies and as explained by Justin Martyr in his First Apology. The article goes on to examine the three ways of using Scripture in public worship. Psalmody, the Lessons and the Sermon. Prayers also use biblical language and it would be improper not to mention Holy Communion as along with the Lord’s Prayer these were the only two examples of instruction about forms of worship given by our Lord to his disciples.
The Bible in Public Worship
Volume 37 1967, p13