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Et sic de similibus references:

Destroy not that which is holy nor trample under foot anything that is good.
For meat destroy not the work of God. All things indeed are pure; but it is evil for that man who eateth with offence. Romans 14:20
Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you. Matthew 7:6

Look for the good in the acts of others instead of looking for evil.
Seek good, and not evil, that ye may live: and so the LORD, the God of hosts, shall be with you, as ye have spoken. Amos 5:14
Let him eschew evil, and do good; let him seek peace, and ensue it. 1 Peter 3:11
¶If ye then be risen with Christ, seek those things which are above, where Christ sitteth on the right hand of God. Colossians 3:1

A good man is good because he looks for good.
But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you. Matthew 6:33

Because iniquity shall abound the love of many shall wax cold.
And because iniquity shall abound, the love of many shall wax cold. Matthew 24:12

Because an evil man sees evil everywhere and in everything he loses his love.
O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh. Matthew 12:34

Love is the basis of goodness.
And we know that all things work together for good to them that love God, to them who are the called according to his purpose. Romans 8:28

There isn't any good without love.
1 Corinthians 13:1  ¶Though I speak with the tongues of men and of angels, and have not charity, I am become as sounding brass, or a tinkling cymbal.
2  And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not charity, I am nothing.
3  And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not charity, it profiteth me nothing.

Because a good man sees good everywhere and in everything his love grows and grows.
A good man out of the good treasure of his heart bringeth forth that which is good; and an evil man out of the evil treasure of his heart bringeth forth that which is evil: for of the abundance of the heart his mouth speaketh. Luke 6:45

Seek to love others and put away all judging.
¶Beloved, let us love one another: for love is of God; and every one that loveth is born of God, and knoweth God. 1 John 4:7
¶Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven: Luke 6:37

Do not judge.
And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world. John 12:47

Seek to praise others for their good.
Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things. Philippians 4:8

Never seek to condemn others.
¶Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven: Luke 6:37

Have you ever noticed that the wicked are the first to judge and seek revenge while the righteous are the first to forgive.
Thou shalt not avenge, nor bear any grudge against the children of thy people, but thou shalt love thy neighbour as thyself: I am the LORD. Leviticus 19:18
Dearly beloved, avenge not yourselves, but rather give place unto wrath: for it is written, Vengeance is mine; I will repay, saith the Lord. Romans 12:19
Matthew 5:39  But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also.
40  And if any man will sue thee at the law, and take away thy coat, let him have thy cloke also.
41  And whosoever shall compel thee to go a mile, go with him twain.
42  Give to him that asketh thee, and from him that would borrow of thee turn not thou away.
Let all bitterness, and wrath, and anger, and clamour, and evil speaking, be put away from you, with all malice: Ephesians 4:31

Forgive, forgive, forgive.
For if ye forgive men their trespasses, your heavenly Father will also forgive you: Matthew 6:14
2 Corinthians 2:5  ¶But if any have caused grief, he hath not grieved me, but in part: that I may not overcharge you all.
6  Sufficient to such a man is this punishment, which was inflicted of many.
7  So that contrariwise ye ought rather to forgive him, and comfort him, lest perhaps such a one should be swallowed up with overmuch sorrow.
8  Wherefore I beseech you that ye would confirm your love toward him.