Confident Christianity - Sunday Sermon

Our confidence in having eternal life through faith in Christ leads to confidence in our prayers. When we pray according to God's will, we can have full assurance that it will come to pass. When we see a brother/sister sinning, we should pray for them, but only if they have not committed a sin leading to death. What type of death is in view? This could be the willful apostacy spoken of in Hebrews 6.