Case endings and number

Of course, let’s not forget the plural.

We already know the nominative plural form of a[ggeloV: oiJ a[ggeloi. oiJ is the nominative plural masculine form of the article, and the case ending is i. So the nominative plural masculine form of oJ ajpovstoloV will be

The accusative plural masculine form of the article is touvV. The case ending is uV. So the accusative plural masculine form of oJ ajpovstoloV will be

(Notice that the accent shifts to a different syllable on ajpostovlouV. You don't have to know why, but be sure to pronounce the word properly.)

What does the following mean?

• oJ qeovV loved tou;V ajpostovlouV. 
• oiJ ajpovstoloi love to;n qeovn.