Observation: The hand has appeared and written on the wall, and Daniel is about to interpret the writing for King Belshazzar. It is a judgment of doom, which will be fulfilled that very night. Before interpreting, Daniel tells the king the reason for this sentence from God. Yes, Belshazzar has violated the Temple items. However, his sin is pride, his offense has manifested as worship of other gods, and all of this has occurred within a context of knowledge.
Belshazzar knew of the Lord based on the actions of Nebuchadnezzar. Yet he took the items of the Lord, and used them to honor other gods, as he believed he could ignore the dangers of judgment that could come from such an action.
Application: My pride is terrible. There are times I sin with full knowledge of my actions, and don't care. In this, I am worthy of only judgment and death.
Pride is the path to worship of earthly idols, and thus I must squash this tendency in myself. This is of primary importance in my life. My pride must be surrendered fully, and in all ways. No matter what, I will sin for I am human, but there is a difference between errors and willful dishonor of the Lord. It is only by my pride that the latter produces in me a mind to actively neglect the instructions of Jesus and the will of God.
Prayer: Lord, please forgive me for my sins, and especially for my pride. I know I am beneath almost everything and everyone on earth, yet I behave as if I am master of my own fate. May I repent of my pride and all the actions it creates. I seek your ways only, and hope to find my joy in your love alone. Amen.