The Levites' tithe and Aaron as type of Christ
Cyril opens his commentary on Numbers by explaining the command that the Levites receive an offering, then shows how Aaron prefigures Christ.
“Take away from it an offering” (Numbers 18:26). Those who were called to serve as priests according to the law of Moses received tithes from the sons of Israel as their portion and inheritance from God. They in turn offered a tenth to the one who presided over and led the priesthood, that is, to Aaron. He has also been set as a type of Christ, ministering not in the first tabernacle, the one that has its visible structure, but in the inner and hidden one.
“Take the rod and assemble the congregation” (Numbers 20:8). Observe that, God confirms their faith by directing them to remember the wonders worked in Egypt by saying, “Take the rod in your hand, with which you struck the river” (Exodus 7:20, LXX). And soon after: Christ is compared to a rock because of its unbreakable and unshakable nature.
Greek
Ἀφελεῖτε ὑμεῖς ἀπ' αὐτοῦ ἀφαίρεμα. Οἱ μὲν κατὰ νόμον τοῦ Μωσέως ἱερᾶσθαι κεκλημένοι, δεκάτας ἐδέχοντο παρὰ τῶν υἱῶν Ἰσραὴλ, ὡς μερίδα καὶ κλῆρον Θεοῦ. Προσεκομίζοντο δὲ αὐτοὶ τὸ ἐπιδέκατον τῷ κατάρχοντι καὶ ἡγουμένῳ τῆς ἱερωσύνης, τουτέστι τῷ Ἀαρών· ὃς καὶ εἰς τύπον τέθειται τοῦ Χριστοῦ, οὐκ ἐν τῇ πρώτῃ σκηνῇ τῇ τὴν στάσιν ἐχούσῃ λειτουργῶν, ἀλλ' ἐν τῇ ἐσωτέρᾳ καὶ κεκρυμμένῃ. Λαβὲ τὴν ῥάβδον καὶ ἐκκλησίασον τὴν συναγωγήν. Ἐπιτήρησον ὅτι βεβαιῶν εἰς πίστιν, πρὸς ἀνάμνησιν τῆς ἐν Αἰγύπτῳ τερατουργίας ἀποφέρει λέγων· Λαβὲ τὴν ῥάβδον ἐν τῇ χειρί σου ἐν ᾗ ἐπάταξας τὸν ποταμόν. Ei mox· Πέτρᾳ παρεικάζεται Χριστὸς διὰ τὸ ἄθραυστον καὶ ἀκλόνητον.