He who stands firm to the end will be saved

Matthew 10:21-23
All men will hate you because of me, but he who stands firm to the end will be saved.
When you are persecuted in one place, flee to another.
I tell you the truth, you will not finish going through the cities of Israel before the Son of Man comes.
Why?
The subject is authority/sovereignty, not Jesus' second coming. The reference here may be to his triumphant return from death at the resurrection.
Because of the different value of life even family member will hate Christians, his parent or brothers.
Be smart like snake, flee to save place when persecution comes.
Stand firm to the end will be saved in heaven.
Blessed are those who are persecuted because of righteousness, for their is the kingdom of heaven.
How?
Be as shrewd as snakes and as innocent as dove and persistent to do good witness before gentiles, this is the life of Christian to live in these evil world.