Maharal Deroshos Al Hatorah 27

"However, from this aspect the men need to toil and struggle in Torah without rest night and day. This is why the verse says “tell the sons of Israel,” a phrasing harsh like sinews (the root of the word sinew is related to the word to tell) that invokes the great toil (of Torah study). However, the women are spoken to in a gentle language because they don’t need this so much. Nevertheless, they (the women) are better fit for the divine reward due to their tranquility."