14:1 Him that is weak in the faith receive ye, but not to doubtful disputations.
14:17 For the kingdom of God is not meat and drink; but righteousness, and peace, and joy in the Holy Ghost.
for decisions of doubts, i.e. doubts about meats, etc. The church has no authority to decide questions of personal liberty in things not expressly forbidden in Scripture. Romans 14:2-6 .
14:23 And he that doubteth is damned if he eat, because he eateth not of faith: for whatsoever is not of faith is sin.
righteousness (See Scofield "Romans 10:10") .
damned condemned, i.e. as in Romans 14:22 .
sin Sin. (See Scofield "Romans 3:23") .