Matthew 6:24
No man can serve two masters: for either he will hate the one and love the other, or he will cleave to the one and neglect the other.
Matthew 9:16
No man putteth a piece of new cloth on an old garment: for that which is put in to fill it; taketh from the garment and the rent is made worse.
Romans 11:6
But if by grace, then it is no more of works: else grace is no longer grace. And if it be of works, then it is no more grace; else work is no longer work.
2 Corinthians 1:12
For this is our rejoicing, the testimony of our conscience, that in simplicity and godly sincerity, not with carnal wisdom, but by the grace of God, we have had our conversation in the world, and more especially toward you.
2 Corinthians 11:3
But I fear lest as the serpent deceived Eve through his subtilty, so your minds should be corrupted from simplicity toward Christ.
James 1:6-8
But let him ask in faith, nothing doubting: for he that doubteth is like a wave of the sea, driven with the wind and tossed.
James 3:10
Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.