There are several practical lessons here including doing good to those who have done good to you, avoiding shaming people publicly, and fighting the battle of this life with courage and complete trust in the work that the Lord will do for us.
God continues to show His power through the plagues that are falling on the land of Egypt. How long does it take people to listen to the word of the Lord? By plague seven (the hail), some of the Egyptians are beginning to believe the truth of the word of God (see Exodus 9:19-20).