We enter in by belief that God ceased from HIs works, and declared a holy day/sanctification/all was very good, Christ did the works of the Father then ceased from HIs works, sanctified Himself that we may also be sanctified by the truth.
Genesis 2:3 And God blessed the seventh day, and
sanctified it: because that in
it he had rested from all his work which God created and made.
John 17:19 And for their sakes I sanctify
myself, that they also might be
sanctified through the truth.
2 Thessalonians 2:13 But we are bound to give thanks alway to God for you, brethren beloved of the Lord, because God hath from the beginning chosen you to salvation through sanctification of the Spirit and belief of the truth:
14 Whereunto he called you by our gospel, to the obtaining of the glory of our Lord Jesus Christ.