Don't let anyone look down on you because you are young, but set an example for the believers in speech, in conduct, in love, in faith and in purity.
NIV
Let no one despise or think less of you because of your youth, but be an example (pattern) for the believers in speech, in conduct, in love, in faith, and in purity.
AMP
Let no man despise thy youth; but be thou an example of the believers, in word, in conversation, in charity, in spirit, in faith, in purity.
KJV
Therefore let us keep the Festival, not with the old bread leavened with malice and wickedness, but with the unleavened bread of sincerity and truth.
NIV
Therefore, let us keep the feast, not with old leaven, nor with leaven of vice and malice and wickedness, but with the unleavened [bread] of purity (nobility, honor) and sincerity and [unadulterated] truth. [Exod. 12:19; 13:7; Deut. 16:3.]AMP
Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth.
KJV
In everything set them an example by doing what is good. In your teaching show integrity, seriousness
NIV
And show your own self in all respects to be a pattern and a model of good deeds and works, teaching what is unadulterated, showing gravity [having the strictest regard for truth and purity of motive], with dignity and seriousness.
AMP
In all things shewing thyself a pattern of good works: in doctrine shewing uncorruptness, gravity, sincerity,
KJV
When they see the purity and reverence of your lives.
NIV
When they observe the pure and modest way in which you conduct yourselves, together with your reverence [for your husband; you are to feel for him all that reverence includes: to respect, defer to, revere him--to honor, esteem, appreciate, prize, and, in the human sense, to adore him, that is, to admire, praise, be devoted to, deeply love, and enjoy your husband].
AMP
While they behold your chaste conversation coupled with fear.
KJV
It is fine to be zealous, provided the purpose is good, and to be so always, not just when I am with you.
NIV
It is always a fine thing [of course] to be zealously sought after [as you are, provided that it is] for a good purpose and done by reason of purity of heart and life, and not just when I am present with you!
AMP
But it is good to be zealously affected always in a good thing, and not only when I am present with you.
KJV