They wanted a sign that would prove that Jesus' power and authority were from God. Possible meanings are 1) The word "heaven" is a metonym for God. AT: "a sign from God" or 2) the word "heaven" refers to the sky. AT: "a sign from the sky" (See: [[rc://en/ta/man/translate/figs-metonymy]])
The Pharisees tried to test Jesus to make him prove that he was from God. Some information can be made explicit. AT: "to prove that God had sent him" (See: [[rc://en/ta/man/translate/figs-explicit]])
This means that he groaned or that he let out a long deep breath that could be heard. It probably shows Jesus' deep sadness that the Pharisees refused to believe him. See how you translated this in [Mark 7:34](../07/33.md).
Jesus is scolding them. This question may be written as a statement. AT: "This generation should not seek a sign." (See: [[rc://en/ta/man/translate/figs-rquestion]])
# this generation
When Jesus speaks of "this generation," he is referring to the people who lived at that time. There Pharisees are included in this group. AT: "you and the people of this generation" (See: [[rc://en/ta/man/translate/figs-explicit]])
# no sign will be given
This can be stated in active form. AT: "I will not give a sign" (See: [[rc://en/ta/man/translate/figs-activepassive]])
# he left them, got into a boat again
Jesus disciples went with him. Some information can be made explicit. AT: "he left them, got into a boat again with his disciples" (See: [[rc://en/ta/man/translate/figs-explicit]])