Prostasso is a Greek verb for commanding, ordering, directing, prescribing, or appointing. Matthew uses it for what the angel of the Lord commanded Joseph, and Joseph responds within the revealed circumstances surrounding Jesus' birth. In Luke 5, the prescribed offering refers to Moses' instruction for a cleansed person. Acts 10 reports Peter ordering baptism after the Holy Spirit has been given to Gentile hearers.
Acts 17 uses the verb for God's determination of peoples' times and dwelling boundaries within Paul's proclamation that all nations come from one and should seek God. The verb identifies directive authority but does not make every human order righteous, unlimited, or equivalent to God's command. Its applications require attention to speaker, recipient, content, delegated authority, and canonical boundaries.
Pastors, parents, spouses, employers, and officials remain accountable and may not use command language to override conscience, consent, safety, truth, or law. Divine appointment in Acts 17 must not be recruited to sanctify racial hierarchy, permanent segregation, conquest, or every modern border policy.