“You must be whole-hearted with the L-RD your G-d.”
– Deuteronomy 18:13, JPS
“Put thy hope in Him and do not attempt to investigate the future, but whatever it may be that comes upon thee accept it whole-heartedly.” – Rashi, sefaria.org
The Targum paraphrase is intriguing: “Ye shall be perfect in the fear of the L-rd your G-d” (Yonatan Targum, Deuteronomy 18:13, sefaria.org). Perhaps, the idea being conveyed in this rendering is, that in order to be tamiym (whole, perfect, having integrity), what is required is yiras H’Shem (awe, reverence and respect towards the L-RD). So, a practical application is included within the Targum rendering of the pasuk (verse). The two go “hand in hand,” yiras H’Shem for the sake of walking whole-heartedly with H’Shem. Because, in this manner, we will be cautious enough, as a result of yiras H’Shem to walk in an upright manner, as pertains to all of our thought, speech, and action.
Moreover, as Rashi clarifies, to trust in H’Shem to the extent that we are not worried about the future, because all is in his hands. As is conveyed elsewhere, all that is required is fear of H’Shem, because He will provide for all else in our lives, dependent upon our sincerity in regard to observing His commandments. There is no need to be concerned about future events, because everything that has happened, is happening, and will happen in our lives is for the good, even if we are currently unable to decipher the goodness found within our circumstances. We trust in H’Shem that only He knows what is best for us.