The recurring theme that jumped out me in today's readings was the glory of God. Everything God does is for His glory, that all men may know that He alone is God.
We see His power in the miracles he told Moses (and Aaron) to perform.
We see His holiness when He was about to kill Moses because He had not circumcised his son - the Lord remembered His covenant promises but His people were also called to remember the conditions of the covenant, one of which was circumcision).
We see Pharoah's haughty and arrogant attitude and outright disdain for God - something that God will soon rectify on a massive scale so that all Egypt may know that He is the Lord.
My favourite portion of our Mark passage is then when temple curtain is torn in two from top to bottom, removing the separation between the Holy Place and the Most Holy Place - giving everyone access to God through the sacrifice of Jesus. The tearing of the curtain was no easy task - it was approximately 60' high, 30" wide, and 4" thick. It was so massive it took 300 priests to manipulate it, and, according to Josephus, horses tied to each side could not pull the veil apart. It would've been incredible to witness that massive curtain being torn in half as though it was only a thin piece of paper. What dramatic symbolism!
Tomorrow's Bible In a Year Passage passage: Exodus 7-8, Mark 16