Matthew 11:12
And from the time of John the Immerser until now, the Kingdom of Heaven is taken by storm, and violent men seize upon it;
Luke 13:24
And He said to them, "Strive to enter in through the narrow door; because many, I say to you, will seek to enter in, and will not be able.
Luke 18:5-7
yet, because this widow occasions me trouble, I will avenge her, lest, by her persistent coming, she wear me out.'"
Philippians 2:12-13
So then, my beloved, as ye always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling;
Colossians 1:29
to which end I am toiling also, striving according to His working, which is working in me with power.