Matthew 6:24
"No one can serve two masters; for either he will hate the one, and love the other; or he will hold to one, and despise the other. Ye cannot serve God and Mammon.
Matthew 9:16
"And no one puts a piece of unshrunk cloth on an old garment; for the patch tears away from the garment, and a worse rent is made."
Romans 11:6
But, if by grace, it is no longer of works; otherwise the grace becomes no longer grace. [But, if of works, it is no longer grace; otherwise, the work is no longer work.]
2 Corinthians 1:12
For our glorying is this, the testimony of our conscience, that in holiness and sincerity of God, not in fleshly wisdom, but in the grace of God, we behaved ourselves in the world, and more abundantly toward you.
2 Corinthians 11:3
but I fear lest, by any means, as the serpent beguiled Eve in his craftiness, your minds should be corrupted from the simplicity and purity which is toward Christ.
James 1:6-8
but let him ask in faith, nothing doubting; for he who doubts is like a wave of the sea, wind-driven and tossed.
James 3:10
Out of the same mouth come forth blessing and cursing! My brethren, these things ought not so to be.