Matthew 6:24
No one is able to serve two masters: for he will hate the one, and love the other; or cleave to the one, and despise the other. You are not able to serve God and mammon.
Matthew 9:16
But no one puts a piece of new cloth on an old garment; for it takes its fullness from the garment, and the rent is made worse.
Romans 11:6
and if by grace, it is not at all by works: since in that case grace is no more grace.
2 Corinthians 1:12
For our boasting is this, the testimony of our conscience, that in holiness and purity of God, not in carnal wisdom, but in the grace of God, we have sojourned in the world, and especially towards you.
2 Corinthians 11:3
but I fear, lest, as the serpent beguiled Eve by his craftiness, your minds may be corrupted from the simplicity which is in Christ.
James 1:6-8
But let him ask in faith, doubting as to nothing; for he that doubts is like unto a wave of the sea driven by the winds and tossed by the tempest.
James 3:10
out of the same mouth come forth blessing and scolding. My brethren, these things ought not so to be.