Two Types Of Giving

 קְח֨וּ מֵֽאִתְּכֶ֤ם תְּרוּמָה֙ לַֽי״י֔ כֹּ֚ל נְדִ֣יב לִבּ֔וֹ יְבִיאֶ֕הָ אֵ֖ת תְּרוּמַ֣ת י״י֑ זָהָ֥ב וָכֶ֖סֶף וּנְחֹֽשֶׁת

Why does it repeat take Teruma, קְח֨וּ מֵֽאִתְּכֶ֤ם תְּרוּמָה֙ and bring Teruma, יְבִיאֶ֕הָ אֵ֖ת תְּרוּמַ֣ת י״י֑?  Why does it switch from תְּרוּמָה֙ לַֽי״י֔ to תְּרוּמַ֣ת י״י֑?  

Rav Shlomo Amar explains the possuk is talking about two different types of donations.  The first group are those that are willing to give whatever it takes toward the Mishkan,  They are willing to give מאתכם from themselves like אדם כי יקריב מכם, they are willing to give themselves over to the project.  These are people willing to donate all of their resources whether it be effort, time, money etc. to complete the project.  Those people are giving 'תרומה לה, they are giving a proper teruma to Hashem that is readily accepted. 

The second group is also נדיב לב, but not to the level of the first group.  They are willing to donate their money but no more.  This group donates זָהָ֥ב וָכֶ֖סֶף וּנְחֹֽשֶׁת but they are not willing to donate themselves.  That is  תְּרוּמַ֣ת י״י֑, it is also recognized as a giving toward Hashem albeit not on the level of the first group.