Rav Baruch Simon, shlita, in his sefer Amri Baruch, suggests a beautiful answer. The Gemara in Sanhedrin says (99b): Amar Rabbi Elazer, kol adam laml nivra, shenamar, kol adam laml yoled.

Rabbi Elazer says, every man was created to toil, as the pasuk says ‘Man was born to work’” The Gemara goes on to ask, in what kind of toiling was the pasuk referring? Was man created to toil in his speech? Was man created to toil in his work? And it concludes that since we find another pasuk in Yehoshua 1:8 which says lo yamoush sefer hatorah hazeh mipkha  - it must mean that aml is in Torah. Rabbi Yisrael of Koznitz Z”l says that laml stands for lilmod al manta lilmod – “You should learn so on condition that you will teach.” Perhaps, one can suggest that when one is learning Torah, he should not only do it for his own personal knowledge, however, he should be learning in order to give it over to others. This is true amlot when a person learns for himself, he gains a lot and gets much enjoyment from it. This may not be the case when he teaching others, for sometimes he may not personally gain for himself – and that is why this is considered amlot. This is why the Pasuk promises us, im bechukotai  telekhu – if you will be amlim b'Torah, and teach it to others, then ve'natna ha'aretz ye'vula ve'et ha'sade yiten piryo – then we will be zocheh to all the berakhot from the Torah.