We can come to the Father even while we are in this world, having a certain knowledge of him and intimacy with him so that whatever may happen to us in this life, we are always in touch with God and always in communion and fellowship with him.
In other words, we should be able to say, as the Bible says we should, “The Lord is my helper, and I will not fear what man shall do unto me” (Hebrews 13:6). So when illness comes or accident or war or trial or persecution or even death itself, I can immediately speak to God and know that I am in his hand. So whatever happens to me, I know “all things work together for good to them that love God” (Romans 8:28). Come to the Father—really come to know God, so that God becomes to you more real, in a sense, than anything you see. This is essential to obtaining a quiet and untroubled heart.
Martyn Lloyd-Jones, Let Not Your Heart Be Troubled