It’s more than just an interesting practice and it has little to do with cleaning the carpets.
The Eastern Churches practice of taking their shoes off is based on Moses ascent of Mt. Sinai to look upon God in the burning bush.
God called out to him from the bush: Moses! Moses! He answered, “Here I am.” God said: Do not come near! Remove your sandals from your feet, for the place where you stand is holy ground. I am the God of your father, he continued, the God of Abraham, the God of Isaac, and the God of Jacob. Moses hid his face, for he was afraid to look at God. (Exodus 3:4-6)
Moses was the only one to look upon the face of God and live. But he did that with great fear. Even the glow from Moses’ face after having looked upon God was enough to kill other people, and Moses had to veil his own face for the safety of others. And like Moses, we look upon God’s face in the Eucharist, and we live. Not only do we look upon God, but we actually consume God - body, blood, soul and divinity - and live. Like Moses, some of the Eastern Churches have a pious custom of removing their shoes, as they enter holy ground where God is present and prpare to behold God face to face.
Many are not familiar with the forshadowing of our own ability to do this - a wonderful gift - as related in the Old Testament, later in the book of Exodus…
Moses then went up with Aaron, Nadab, Abihu, and seventy elders of Israel, and they beheld the God of Israel. Under his feet there appeared to be sapphire tilework, as clear as the sky itself. Yet he did not lay a hand on these chosen Israelites. They saw God, and they ate and drank. (Exodus 24:9-11)
This should sound very familiar to Catholics. It is what we do at every Mass! We see God, and we eat and drink. The seventy elders are you and I. It’s the Eucharist. Bam! Right there in Exodus
Sorry, went pretty far afield with that explanation. But there it is. I think that is why many of the Eastern Churches remove their shoes.
-Tim-