In the Greek — λειτουργέω (leitourgeō) —, “liturgy” is composed of two parts: people and work. The liturgy is the work of the people or a collective work of the people.

Without uniting with the Body of Christ in the Eucharist, the people of God cannot be united together in one entity.

When we eat ordinary food, we transform it into our bodies. When we eat and drink the sacraments, we are made a part of what we eat and drink, into members in the body of Christ, and it is not we who transform Him into our souls or bodies.

— St Augustine

The liturgy is the sacrament of gathering the separate individuals into One. The action of the liturgy is in transforming us into saints qualified to partake in the holies.

Just as earthly bread, by the blessing of God, ceases to be ordinary bread but becomes Eucharistic, composed of earthly and heavenly bread, so also our bodies, after participating in the divine Eucharist, are no longer corrupt but have the hope of resurrection.

— St Irenaeus

We also may find "breaking of bread" as the expression for liturgy in the New Testament.

And they continued steadfastly in the apostles’ doctrine and fellowship, in the breaking of bread, and in prayers.

— Acts 2:42

Now when he had come up, had broken bread and eaten, and talked a long while, even till daybreak, he departed.

— Acts 20:11

So continuing daily with one accord in the temple, and breaking bread from house to house, they ate their food with gladness and simplicity of heart,

— Acts 2:46

And when he had said these things, he took bread and gave thanks to God in the presence of them all; and when he had broken it he began to eat.

— Acts 27:35

Now on the first day of the week, when the disciples came together to break bread, Paul, ready to depart the next day, spoke to them and continued his message until midnight.

— Acts 20:7

The Lord Jesus used this expression when He broke the bread when instituting the sacrament.

“He took bread” corresponds to the Offering of the Lamb. “He gave thanks” corresponds to the prayers of thanksgiving and sanctification. “He broke it” corresponds to the Fraction. “He gave it to them” corresponds to the hymns of distribution. “Do this” is the command to practice the sacrament throughout generations.

And they told about the things that had happened on the road, and how He was known to them in the breaking of bread.

— Luke 24:35

Now it came to pass, as He sat at the table with them, that He took bread, blessed and broke it, and gave it to them.

— Luke 24:30

And He took bread, gave thanks and broke it, and gave it to them, saying, “This is My body which is given for you; do this in remembrance of Me.”

— Luke 22:19

St Paul uses the same expression when reaffirming the sacrament.

The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ?

— 1 Corinthians 10:16

We should worship the Lord with fear, awe, reverence.

But as for me, in the fullness of Your mercy I will come into Your house;
In fear of You I will worship toward Your holy temple.

— Psalm 5:8

God is glorified in the counsel of saints;
He is great and fearful toward all round about Him.

— Psalm 88:7

For the Lord Most High is fearsome,
A great King over all the earth.

— Psalm 46:3