Mark's gospel describes the miraculous transformation of the disciples, who began with slow comprehension, into faithful, mature apostles and fishers of men.
Contrary to Protestant understanding, our works emphatically do count - showing or demonstrating (not just telling) that we will be obedient.
The Kingdom of God or of Heaven has past, present, and future aspects. The Kingdom parables primarily provide instruction for the present aspect.
The story of Joseph offers lessons and encouragement regarding God's dealings with men during the time of the Feast of Trumpets.
Galatians 4:4 says that Jesus was "born under [the] law." Some use this to say that while Christ had to keep all the rituals, we do not have to follow His example.
John emphasizes the reality of Jesus as the Logos (a word revealing hidden thought), the manifestation of God in the flesh, emphasizing His preexistence and divinity.