Given a sentence in Tagalog language, translate the sentence to English language keeping the meaning of the original sentence intact.

Tagalog sentence: "...Ngayon kung marinig ninyo ang Kaniyang tinig, huwag ninyong papagmatigasin ang inyong mga puso." Hebreo 3:15.
"...Today if ye will hear his voice, harden not your hearts" Hebrews 3:15.