Hebrews 3:14

For we are made partakers of Christ, if we hold the beginning of our confidence stedfast unto the end;

Colossians 2:8

Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ. {rudiments: or, elements} {make a prey: or, seduce you, or, lead you astray}

2 Corinthians 11:13-15

For such {are} false apostles, deceitful workers, transforming themselves into the apostles of Christ.

1 Corinthians 15:58

Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.

Ephesians 4:14

That we {henceforth} be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, {and} cunning craftiness, whereby they lie in wait to deceive;

1 Corinthians 10:12

Wherefore let him that thinketh he standeth take heed lest he fall.

Matthew 7:15

Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.

2 Peter 2:18-22

For when they speak great swelling {words} of vanity, they allure through the lusts of the flesh, {through much} wantonness, those that were clean escaped from them who live in error. {clean: or, for a little, or, a while, as some read}