Bible Verses About Martyrdom: Should be prepared for

Then Jesus said to his disciples: If any man will come after me, let him deny himself, and take up his cross, and follow me.

For he that will save his life, shall lose it: and he that shall lose his life for my sake, shall find it.

Then Paul answered and said: What do you mean, weeping and afflicting my heart? For I am ready not only to be bound, but to die also in Jerusalem, for the name of the Lord Jesus.