Let's Get Strait

(49) I am come to send fire on the earth; and what will I, if it be already kindled?
(50) But I have a baptism to be baptized with; and how am I straitened till it be accomplished!
-Luke 12:49-50 KJV

Some commentaries and certain translations suggest, in short, that this verse indicates distress felt by Jesus over the suffering that He must face. The verb that raises the question is in verse 50; the verb translated as "straitened."
The Greek word is συνεχω{sunecho/G4912}. While sunecho can be interpreted to indicate distress/pressing; this translation does not fit the context. Jesus had just indicated in verse 49 that part of His mission was to bring fire{purification} upon the earth. It makes no sense for Jesus to follow-up saying that He is distressed over His impending suffering{"baptism" (vs 50a)}.
Sunecho can also be interpreted to indicate maintaining an unswervable direction; as a ship caught in a strait being driven into a narrow channel. Sunecho is also the same verb translated "stopped their ears" in Acts 7:57.
The message of Luke 12:49-50 is that Jesus has come to teach the judgement of God and admonish all to repent{which will also bring division(vs.51)}; He knows what his mission entails and will accomplish, therefore He will be not be swayed or delayed from performing God's purpose for Himself. He has stopped His ears, so to speak, from all distraction; and as a ship being directed by a strait- nothing would alter His course toward the cross.
The lesson we should take from Luke 12:49-50 is that no matter the hardship and suffering we may face; we need to face our responsibilities as though we were on a one-way course and have an earnest zeal to complete them.