The first and the third reading this morning was the Shema, Deut. 6:2-6 and Mk. 12:28-34. And some priest stuff from Hebrews thrown in for good measure. The second reading rarely syncs with the other two, fyi. Although there may be a way to link all three readings together in this instance.

See also:

Shema Yisrael - Wiki

"Shema in Christianity" - Wiki