I'm familiar with the commandments and one of them is to keep the seven day holy! It is important to set apart time to worship and praise our Creator, however, driving to gather up for dinner, serving others and acting in case of an emergency is acceptable according to my understanding. What matter is that our heart of stone is replaced with a heart of flesh circumcised by our Heavenly Father, he is a spirit and we must walk in the spirit by faith to please him. I interpret your father's message as to let go of traditions and think for yourselves. The God of Abraham, Isaac and Jacob loves true Israel and righteous gentiles as well. His strong arm provided a way to gap the bridge that separated him from those who he loves. Yeshua hamashiach, is the strong arm of the Lord, he is his word made flesh to Atone for his people's sins since the law could not do it. שָׁלוֹם‬ shalom