Prayers for you and your family brother. Our family faced cancer 2 years ago when my bride of now 29 years was diagnosed. As hard as it was to do we put it all in God's hands and we had tremendous support from our friends. (who are many times closer than our own family).
My dad's favorite scripture is Philippians 4:6-7:
"Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God; and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.