Lyric discussion by In the mist 

Cover art for The Cross lyrics by Within Temptation

that's possible , but i have another theorie

i think the you figure, is god. its about the relation between the I figure and god. and she is wondering about why she holds on to the cross (holding on to her religion) because of all the negativity she feels and encounters in her life. she is like questioning the reason to to keep holding on to god. ("The cross I bear But you don't seem to care)

but i also have a second theory, you could also interpretate this song as extremely anti-religious. like in challeging everyone's faith or at least christianity.
"Cold is your silence, denying what is real"

"I'm sorry if you can't stand the naked truth All you see is how you want it to be So you keep on living your lie"

you could see these sentences as being directed towards the reader/listener. its like she saying "there is no god, you are just lieing to yourself, believing in what is not real, you just can't face reality because it realy scares you to think there would be no god."

but i don't think it would be likely that sharon would have that kind of opinion. so i will go with my first theory

but she is like talking down to god, like in a way of a relationship between two people. she's talking to him like an equal, not a higher being