# The knowledge ... of the kingdom of God has been given to you

"God has given to you the knowledge ... of the kingdom of God" or "You have received the knowledge ... of the kingdom of God"

# the secrets of the kingdom of God

These are truths that have been hidden, but Jesus is now revealing them.

# for others

"for other people." This refers to the people who rejected the teaching of Jesus and did not follow him.

# seeing they may not see

"though they see, they will not perceive" or "though they see things, they will not understand them" or "though they see things happen, they will not understand what they mean" 

# hearing they may not understand

"though they hear, they will not understand" or "though they hear instruction, they will not understand the truth."  This is a quote from the prophet Isaiah.