St. Paul writes in 1 Corinthians 3:9-17 :
We are God’s fellow workers; you are God’s field, you are God’s building. According to the grace of God which was given to me, as a wise master builder I have laid the foundation, and another builds on it. But let each one take heed how he builds on it. For no other foundation can anyone lay than that which is laid, which is Jesus Christ. Now if anyone builds on this foundation with gold, silver, precious stones, wood, hay, straw, each one’s work will become manifest; for the Day will declare it, because it will be revealed by fire; and the fire will test each one’s work, of what sort it is. If anyone’s work which he has built on it endures, he will receive a reward. If anyone’s work is burned, he will suffer loss; but he himself will be saved, yet so as through fire. Do you not know that you are the temple of God and that the Spirit of God dwells in you? If anyone defiles the temple of God, God will destroy him. For the temple of God is holy, which temple you are.
St. Isaac of Ninevah (7th Century) comments:
“I give praise to Your holy Nature, Lord, for You have made my nature a sanctuary for Your hiddenness and a tabernacle for Your Mysteries, a place where You can dwell, and a holy temple for Your divinity, (namely for) Him who holds the scepter of Your Kingdom, who governs all You have brought into being, the glorious Tabernacle of Your eternal Being, the source of renewal for the ranks of fire which minister to You, the Way to knowledge of You, the Door to vision of You, the summation of Your power and great wisdom – Jesus Christ the Only-Begotten from Your bosom and remnant gathered in from Your creation, both visible and spiritual.” (The Second Part: Chapters IV-XLI, p 8)
I have been crucified with Christ; it is no longer I who live, but Christ who lives in me… (Galatians 2:20)