Colossians 4:3-4
At the same time, pray also for us, that God may open to us a door for the word, to declare the mystery of Christ, on account of which I am in prison— that I may make it clear, which is how I ought to speak.

A genuine Gospel-faith has nothing selfish about it – it never makes a man think only of his own salvation. It stirs him up, on the contrary, to concern about the souls of others. I always suspect that those who care nothing whether their brethren are saved or not, must in reality be ignorant or thoughtless about their own state.
J.C. Ryle