He repeated that prayer again and then He submitted Himself to God's will and decided to carry it out. He got up like a warrior and came to meet the enemies. He did not pray afterwards to know God's will. Such of those wills of God which are known to us definitely should be fulfilled at once. Our souls identify sin.
Man knows certain ways definitely, but they are paths of death.
Even after knowing the will of God, fulfilling our own wish ignoring His will is sin. We should desist even doing good thing, when we know that it is not His will. We should abandon our will and fulfill His will. The will of God may differ from man to man. How God treats us should be accepted by us happily.