James 1:8

A double-minded man is inconstant in all his ways.

James 4:8

Draw near to God, and He will draw near to you: cleanse your hands, O sinners, and purify your hearts, ye double minded.

2 Peter 2:14

having eyes full of adultery, and which cannot be restrained from sin: ensnaring unstable souls, and having a heart practised in rapine; cursed people:

2 Peter 3:16

as also in all his epistles, speaking in them of these things: in which are some things hard to be understood, which the illiterate and unstable wrest, as they do also the other scriptures, to their own destruction.

Matthew 6:22

The eye is the light of the body: if therefore thine eye be clear, thy whole body will be light;

Matthew 6:24

No one can serve two masters; for either he will hate the one, and love the other; or at lest he will be attached to the one, and neglect the other: ye cannot serve God and mammon:

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