Simon Bar-jona = Simon, son of Jonah. The Lord uses his human name and parentage in contrast with the divine origin of the revelation made to him.
Bar-jona. Aramaic. See App-94.:28. Occurs only here.
flesh and blood. Put by Figure of speech Synecdoche (of the Part), App-6, for a mortal human being in contrast with God the Father in the heavens. See 1Co_15:50. Gal_1:1, Gal_1:16. Eph_6:12. Heb_2:14.
heaven = the heavens (plural) See note on Mat_6:9, Mat_6:10.