Matthew 6:24
No one can serve two masters; for either he will hate one, and love the other; or else he will cleave to one, and despise the other. Ye cannot serve God and mammon.
Matthew 9:16
No one putteth a patch of undressed cloth on an old garment; for the piece that filleth in teareth away from the garment, and a worse rent is made.
Romans 11:6
And if it is by grace, it is no longer on account of works; otherwise grace ceaseth to be grace; but if it is of works, there is then no grace; otherwise work ceaseth to be work. How is it then?
2 Corinthians 1:12
For our glorying is this, the testimony of our conscience, that in simplicity and the sincerity which is of God, not in fleshly wisdom, but in the grace of God, we have conducted ourselves in the world, and especially toward you.
2 Corinthians 11:3
but I fear, lest by any means, as the serpent beguiled Eve by his subtlety, so your minds should be corrupted from singleheartedness 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 by 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.