1) "And the angel said unto him," (eipen de ho angelos pros auton) "Then the angel instructed or directed him," as Gabriel instructs servants of God, Daniel 8:15-19; Luke 1:11-22; Luke 1:26-35.
2) "Gird thyself and bind on thy sandals," (zosai kai hupodesai ta sandalia sou) "Gird or dress yourself with a girdle tightening and put on your sandals," for a journey, an escape from that prison and the power of the chains that held and enslaved him.
3) "And so he did," (epoiesen de houtos) "And he did so," did exactly that, what he was told, at once, in obedience to the angel, a messenger from God to minister to and deliver him that night, Psalms 34:7; Daniel 6:22; Hebrews 1:14.
4) "And he saith unto him," (kai legei auto) "And he (the angel) then instructed him further," step by step, as by the Spirit he obediently led him out of the prison cell or chamber, Romans 8:14.
5) "Cast thy garment about thee," (peribalou to himation soul "Throw your garment (wrap around garment) around you," the tunic loosely worn at night or laid aside, but bound tightly with a girdle around the waist for daily travel, not to hinder rapid movement.
6) "And follow me," (kai akolouthei moi) "And follow toward me," or follow me closely, as if I were the Lord, even as Paul morally, ethically, and doctrinally instructed, 1 Corinthians 11:1-2.
7) "And his chains fell off from his hands," (kai eksepesan autou hai haluseis ek ton cheiron) "And the chains with which he was bound came apart and fell out from and off of him," of his hands, each of which had been bound to a soldier on either side. He breaks bonds of sin, sets captives free, and cares for His own in every trial, Hebrews 13:5; 1 Corinthians 10:13.